20.4.1
 - Revert "ssh_util: handle non-default AuthorizedKeysFile config (#586)"

20.4
 - tox: avoid tox testenv subsvars for xenial support (#684)
 - Ensure proper root permissions in integration tests (#664) [James Falcon]
 - LXD VM support in integration tests (#678) [James Falcon]
 - Integration test for fallocate falling back to dd (#681) [James Falcon]
 - .travis.yml: correctly integration test the built .deb (#683)
 - Ability to hot-attach NICs to preprovisioned VMs before reprovisioning
   (#613) [aswinrajamannar]
 - Support configuring SSH host certificates. (#660) [Jonathan Lung]
 - add integration test for LP: #1900837 (#679)
 - cc_resizefs on FreeBSD: Fix _can_skip_ufs_resize (#655)
   [Mina Galić] (LP: #1901958, #1901958)
 - DataSourceAzure: push dmesg log to KVP (#670) [Anh Vo]
 - Make mount in place for tests work (#667) [James Falcon]
 - integration_tests: restore emission of settings to log (#657)
 - DataSourceAzure: update password for defuser if exists (#671) [Anh Vo]
 - tox.ini: only select "ci" marked tests for CI runs (#677)
 - Azure helper: Increase Azure Endpoint HTTP retries (#619) [Johnson Shi]
 - DataSourceAzure: send failure signal on Azure datasource failure (#594)
   [Johnson Shi]
 - test_persistence: simplify VersionIsPoppedFromState (#674)
 - only run a subset of integration tests in CI (#672)
 - cli: add --system param to allow validating system user-data on a
   machine (#575)
 - test_persistence: add VersionIsPoppedFromState test (#673)
 - introduce an upgrade framework and related testing (#659)
 - add --no-tty option to gpg (#669) [Till Riedel] (LP: #1813396)
 - Pin pycloudlib to a working commit (#666) [James Falcon]
 - DataSourceOpenNebula: exclude SRANDOM from context output (#665)
 - cloud_tests: add hirsute release definition (#662)
 - split integration and cloud_tests requirements (#652)
 - faq.rst: add warning to answer that suggests running `clean` (#661)
 - Fix stacktrace in DataSourceRbxCloud if no metadata disk is found (#632)
   [Scott Moser]
 - Make wakeonlan Network Config v2 setting actually work (#626)
   [dermotbradley]
 - HACKING.md: unify network-refactoring namespace (#658) [Mina Galić]
 - replace usage of dmidecode with kenv on FreeBSD (#621) [Mina Galić]
 - Prevent timeout on travis integration tests. (#651) [James Falcon]
 - azure: enable pushing the log to KVP from the last pushed byte  (#614)
   [Moustafa Moustafa]
 - Fix launch_kwargs bug in integration tests (#654) [James Falcon]
 - split read_fs_info into linux & freebsd parts (#625) [Mina Galić]
 - PULL_REQUEST_TEMPLATE.md: expand commit message section (#642)
 - Make some language improvements in growpart documentation (#649)
   [Shane Frasier]
 - Revert ".travis.yml: use a known-working version of lxd (#643)" (#650)
 - Fix not sourcing default 50-cloud-init ENI file on Debian (#598)
   [WebSpider]
 - remove unnecessary reboot from gpart resize (#646) [Mina Galić]
 - cloudinit: move dmi functions out of util (#622) [Scott Moser]
 - integration_tests: various launch improvements (#638)
 - test_lp1886531: don't assume /etc/fstab exists (#639)
 - Remove Ubuntu restriction from PR template (#648) [James Falcon]
 - util: fix mounting of vfat on *BSD (#637) [Mina Galić]
 - conftest: improve docstring for disable_subp_usage (#644)
 - doc: add example query commands to debug Jinja templates (#645)
 - Correct documentation and testcase data for some user-data YAML (#618)
   [dermotbradley]
 - Hetzner: Fix instance_id / SMBIOS serial comparison (#640)
   [Markus Schade]
 - .travis.yml: use a known-working version of lxd (#643)
 - tools/build-on-freebsd: fix comment explaining purpose of the script
   (#635) [Mina Galić]
 - Hetzner: initialize instance_id from system-serial-number (#630)
   [Markus Schade] (LP: #1885527)
 - Explicit set IPV6_AUTOCONF and IPV6_FORCE_ACCEPT_RA on static6 (#634)
   [Eduardo Otubo]
 - get_interfaces: don't exclude Open vSwitch bridge/bond members (#608)
   [Lukas Märdian] (LP: #1898997)
 - Add config modules for controlling IBM PowerVM RMC. (#584)
   [Aman306] (LP: #1895979)
 - Update network config docs to clarify MAC address quoting (#623)
   [dermotbradley]
 - gentoo: fix hostname rendering when value has a comment (#611)
   [Manuel Aguilera]
 - refactor integration testing infrastructure (#610) [James Falcon]
 - stages: don't reset permissions of cloud-init.log every boot (#624)
   (LP: #1900837)
 - docs: Add how to use cloud-localds to boot qemu (#617) [Joshua Powers]
 - Drop vestigial update_resolve_conf_file function (#620) [Scott Moser]
 - cc_mounts: correctly fallback to dd if fallocate fails (#585)
   (LP: #1897099)
 - .travis.yml: add integration-tests to Travis matrix (#600)
 - ssh_util: handle non-default AuthorizedKeysFile config (#586)
   [Eduardo Otubo]
 - Multiple file fix for AuthorizedKeysFile config (#60) [Eduardo Otubo]
 - bddeb: new --packaging-branch argument to pull packaging from branch
   (#576) [Paride Legovini]
 - Add more integration tests (#615) [lucasmoura]
 - DataSourceAzure: write marker file after report ready in preprovisioning
   (#590) [Johnson Shi]
 - integration_tests: emit settings to log during setup (#601)
 - integration_tests: implement citest tests run in Travis (#605)
 - Add Azure support to integration test framework (#604) [James Falcon]
 - openstack: consider product_name as valid chassis tag (#580)
   [Adrian Vladu] (LP: #1895976)
 - azure: clean up and refactor report_diagnostic_event (#563) [Johnson Shi]
 - net: add the ability to blacklist network interfaces based on driver
   during enumeration of physical network devices (#591) [Anh Vo]
 - integration_tests: don't error on cloud-init failure (#596)
 - integration_tests: improve cloud-init.log assertions (#593)
 - conftest.py: remove top-level import of httpretty (#599)
 - tox.ini: add integration-tests testenv definition (#595)
 - PULL_REQUEST_TEMPLATE.md: empty checkboxes need a space (#597)
 - add integration test for LP: #1886531 (#592)
 - Initial implementation of integration testing infrastructure (#581)
   [James Falcon]
 - Fix name of ntp and chrony service on CentOS and RHEL. (#589)
   [Scott Moser] (LP: #1897915)
 - Adding a PR template (#587) [James Falcon]
 - Azure parse_network_config uses fallback cfg when generate IMDS network
   cfg fails (#549) [Johnson Shi]
 - features: refresh docs for easier out-of-context reading (#582)
 - Fix typo in resolv_conf module's description (#578) [Wacław Schiller]
 - cc_users_groups: minor doc formatting fix (#577)
 - Fix typo in disk_setup module's description (#579) [Wacław Schiller]
 - Add vendor-data support to seedfrom parameter for NoCloud and OVF (#570)
   [Johann Queuniet]
 - boot.rst: add First Boot Determination section (#568) (LP: #1888858)
 - opennebula.rst: minor readability improvements (#573) [Mina Galić]
 - cloudinit: remove unused LOG variables (#574)
 - create a shutdown_command method in distro classes (#567)
   [Emmanuel Thomé]
 - user_data: remove unused constant (#566)
 - network: Fix type and respect name when rendering vlan in
   sysconfig. (#541) [Eduardo Otubo] (LP: #1788915, #1826608)
 - Retrieve SSH keys from IMDS first with OVF as a fallback (#509)
   [Thomas Stringer]
 - Add jqueuniet as contributor (#569) [Johann Queuniet]
 - distros: minor typo fix (#562)
 - Bump the integration-requirements versioned dependencies (#565)
   [Paride Legovini]
 - network-config-format-v1: fix typo in nameserver example (#564)
   [Stanislas]
 - Run cloud-init-local.service after the hv_kvp_daemon (#505)
   [Robert Schweikert]
 - Add method type hints for Azure helper (#540) [Johnson Shi]
 - systemd: add Before=shutdown.target when Conflicts=shutdown.target is
   used (#546) [Paride Legovini]
 - LXD: detach network from profile before deleting it (#542)
   [Paride Legovini] (LP: #1776958)
 - redhat spec: add missing BuildRequires (#552) [Paride Legovini]
 - util: remove debug statement (#556) [Joshua Powers]
 - Fix cloud config on chef example (#551) [lucasmoura]

20.3
 - Azure: Add netplan driver filter when using hv_netvsc driver (#539)
   [James Falcon] (LP: #1830740)
 - query: do not handle non-decodable non-gzipped content (#543)
 - DHCP sandboxing failing on noexec mounted /var/tmp (#521) [Eduardo Otubo]
 - Update the list of valid ssh keys. (#487)
   [Ole-Martin Bratteng] (LP: #1877869)
 - cmd: cloud-init query to handle compressed userdata (#516) (LP: #1889938)
 - Pushing cloud-init log to the KVP (#529) [Moustafa Moustafa]
 - Add Alpine Linux support. (#535) [dermotbradley]
 - Detect kernel version before swap file creation (#428) [Eduardo Otubo]
 - cli: add devel make-mime subcommand (#518)
 - user-data: only verify mime-types for TYPE_NEEDED and x-shellscript
   (#511) (LP: #1888822)
 - DataSourceOracle: retry twice (and document why we retry at all) (#536)
 - Refactor Azure report ready code (#468) [Johnson Shi]
 - tox.ini: pin correct version of httpretty in xenial{,-dev} envs (#531)
 - Support Oracle IMDSv2 API (#528) [James Falcon]
 - .travis.yml: run a doc build during CI (#534)
 - doc/rtd/topics/datasources/ovf.rst: fix doc8 errors (#533)
 - Fix 'Users and Groups' configuration documentation (#530) [sshedi]
 - cloudinit.distros: update docstrings of add_user and create_user (#527)
 - Fix headers for device types in network v2 docs (#532)
   [Caleb Xavier Berger]
 - Add AlexBaranowski as contributor (#508) [Aleksander Baranowski]
 - DataSourceOracle: refactor to use only OPC v1 endpoint (#493)
 - .github/workflows/stale.yml: s/Josh/Rick/ (#526)
 - Fix a typo in apt pipelining module (#525) [Xiao Liang]
 - test_util: parametrize devlist tests (#523) [James Falcon]
 - Recognize LABEL_FATBOOT labels (#513) [James Falcon] (LP: #1841466)
 - Handle additional identifier for SLES For HPC (#520) [Robert Schweikert]
 - Revert "test-requirements.txt: pin pytest to <6 (#512)" (#515)
 - test-requirements.txt: pin pytest to <6 (#512)
 - Add "tsanghan" as contributor (#504) [tsanghan]
 - fix brpm building (LP: #1886107)
 - Adding eandersson as a contributor (#502) [Erik Olof Gunnar Andersson]
 - azure: disable bouncing hostname when setting hostname fails (#494)
   [Anh Vo]
 - VMware: Support parsing DEFAULT-RUN-POST-CUST-SCRIPT (#441)
   [xiaofengw-vmware]
 - DataSourceAzure: Use ValueError when JSONDecodeError is not available
   (#490) [Anh Vo]
 - cc_ca_certs.py: fix blank line problem when removing CAs and adding
   new one (#483) [dermotbradley]
 - freebsd: py37-serial is now py37-pyserial (#492) [Gonéri Le Bouder]
 - ssh exit with non-zero status on disabled user (#472)
   [Eduardo Otubo] (LP: #1170059)
 - cloudinit: remove global disable of pylint W0107 and fix errors (#489)
 - networking: refactor wait_for_physdevs from cloudinit.net (#466)
   (LP: #1884626)
 - HACKING.rst: add pytest.param pytest gotcha (#481)
 - cloudinit: remove global disable of pylint W0105 and fix errors (#480)
 - Fix two minor warnings (#475)
 - test_data: fix faulty patch (#476)
 - cc_mounts: handle missing fstab (#484) (LP: #1886531)
 - LXD cloud_tests: support more lxd image formats (#482) [Paride Legovini]
 - Add update_etc_hosts as default module on *BSD (#479) [Adam Dobrawy]
 - cloudinit: fix tip-pylint failures and bump pinned pylint version (#478)
 - Added BirknerAlex as contributor and sorted the file (#477)
   [Alexander Birkner]
 - Update list of types of modules in cli.rst [saurabhvartak1982]
 - tests: use markers to configure disable_subp_usage (#473)
 - Add mention of vendor-data to no-cloud format documentation (#470)
   [Landon Kirk]
 - Fix broken link to OpenStack metadata service docs (#467)
   [Matt Riedemann]
 - Disable ec2 mirror for non aws instances (#390)
   [lucasmoura] (LP: #1456277)
 - cloud_tests: don't pass --python-version to read-dependencies (#465)
 - networking: refactor is_physical from cloudinit.net (#457) (LP: #1884619)
 - Enable use of the caplog fixture in pytest tests, and add a
   cc_final_message test using it (#461)
 - RbxCloud: Add support for FreeBSD (#464) [Adam Dobrawy]
 - Add schema for cc_chef module (#375) [lucasmoura] (LP: #1858888)
 - test_util: add (partial) testing for util.mount_cb (#463)
 - .travis.yml: revert to installing ubuntu-dev-tools (#460)
 - HACKING.rst: add details of net refactor tracking (#456)
 - .travis.yml: rationalise installation of dependencies in host (#449)
 - Add dermotbradley as contributor. (#458) [dermotbradley]
 - net/networking: remove unused functions/methods (#453)
 - distros.networking: initial implementation of layout (#391)
 - cloud-init.service.tmpl: use "rhel" instead of "redhat" (#452)
 - Change from redhat to rhel in systemd generator tmpl (#450)
   [Eduardo Otubo]
 - Hetzner: support reading user-data that is base64 encoded. (#448)
   [Scott Moser] (LP: #1884071)
 - HACKING.rst: add strpath gotcha to testing gotchas section (#446)
 - cc_final_message: don't create directories when writing boot-finished
   (#445) (LP: #1883903)
 - .travis.yml: only store new schroot if something has changed (#440)
 - util: add ensure_dir_exists parameter to write_file (#443)
 - printing the error stream of the dhclient process before killing it
   (#369) [Moustafa Moustafa]
 - Fix link to the MAAS documentation (#442)
   [Paride Legovini] (LP: #1883666)
 - RPM build: disable the dynamic mirror URLs when using a proxy (#437)
   [Paride Legovini]
 - util: rename write_file's copy_mode parameter to preserve_mode (#439)
 - .travis.yml: use $TRAVIS_BUILD_DIR for lxd_image caching (#438)
 - cli.rst: alphabetise devel subcommands and add net-convert to list (#430)
 - Default to UTF-8 in /var/log/cloud-init.log (#427) [James Falcon]
 - travis: cache the chroot we use for package builds (#429)
 - test: fix all flake8 E126 errors (#425) [Joshua Powers]
 - Fixes KeyError for bridge with no "parameters:" setting (#423)
   [Brian Candler] (LP: #1879673)
 - When tools.conf does not exist, running cmd "vmware-toolbox-cmd
   config get deployPkg enable-custom-scripts", the return code will
   be EX_UNAVAILABLE(69), on this condition, it should not take it as
   error. (#413) [chengcheng-chcheng]
 - Document CloudStack data-server well-known hostname (#399) [Gregor Riepl]
 - test: move conftest.py to top-level, to cover tests/ also (#414)
 - Replace cc_chef is_installed with use of subp.is_exe. (#421)
   [Scott Moser]
 - Move runparts to subp. (#420) [Scott Moser]
 - Move subp into its own module. (#416) [Scott Moser]
 - readme: point at travis-ci.com (#417) [Joshua Powers]
 - New feature flag functionality and fix includes failing silently (#367)
   [James Falcon] (LP: #1734939)
 - Enhance poll imds logging (#365) [Moustafa Moustafa]
 - test: fix all flake8 E121 and E123 errors (#404) [Joshua Powers]
 - test: fix all flake8 E241 (#403) [Joshua Powers]
 - test: ignore flake8 E402 errors in main.py (#402) [Joshua Powers]
 - cc_grub_dpkg: determine idevs in more robust manner with grub-probe
   (#358) [Matthew Ruffell] (LP: #1877491)
 - test: fix all flake8 E741 errors (#401) [Joshua Powers]
 - tests: add groovy integration tests for ubuntu (#400)
 - Enable chef_license support for chef infra client (#389) [Bipin Bachhao]
 - testing: use flake8 again (#392) [Joshua Powers]
 - enable Puppet, Chef mcollective in default config (#385)
   [Mina Galić (deprecated: Igor Galić)] (LP: #1880279)
 - HACKING.rst: introduce .net -> Networking refactor section (#384)
 - Travis: do not install python3-contextlib2 (dropped dependency) (#388)
   [Paride Legovini]
 - HACKING: mention that .github-cla-signers is alpha-sorted (#380)
 - Add bipinbachhao as contributor (#379) [Bipin Bachhao]
 - cc_snap: validate that assertions property values are strings (#370)
 - conftest: implement partial disable_subp_usage (#371)
 - test_resolv_conf: refresh stale comment (#374)
 - cc_snap: apply validation to snap.commands properties (#364)
 - make finding libc platform independent (#366)
   [Mina Galić (deprecated: Igor Galić)]
 - doc/rtd/topics/faq: Updates LXD docs links to current site (#368) [TomP]
 - templater: drop Jinja Python 2 compatibility shim (#353)
 - cloudinit: minor pylint fixes (#360)
 - cloudinit: remove unneeded __future__ imports (#362)
 - migrating momousta lp user to Moustafa-Moustafa GitHub user (#361)
   [Moustafa Moustafa]
 - cloud_tests: emit dots on Travis while fetching images (#347)
 - Add schema to apt configure config (#357) [lucasmoura] (LP: #1858884)
 - conftest: add docs and tests regarding CiTestCase's subp functionality
   (#343)
 - analyze/dump: refactor shared string into variable (#350)
 - doc: update boot.rst with correct timing of runcmd (#351)
 - HACKING.rst: change contact info to Rick Harding (#359) [lucasmoura]
 - HACKING.rst: guide people to add themselves to the CLA file (#349)
 - HACKING.rst: more unit testing documentation (#354)
 - .travis.yml: don't run lintian during integration test package builds
   (#352)
 - Add test to ensure docs examples are valid cloud-init configs (#355)
   [James Falcon] (LP: #1876414)
 - make suse and sles support 127.0.1.1 (#336) [chengcheng-chcheng]
 - Create tests to validate schema examples (#348)
   [lucasmoura] (LP: #1876412)
 - analyze/dump: add support for Amazon Linux 2 log lines (#346)
   (LP: #1876323)
 - bsd: upgrade support (#305) [Gonéri Le Bouder]
 - Add lucasmoura as contributor (#345) [lucasmoura]
 - Add "therealfalcon" as contributor (#344) [James Falcon]
 - Adapt the package building scripts to use Python 3 (#231)
   [Paride Legovini]
 - DataSourceEc2: use metadata's NIC ordering to determine route-metrics
   (#342) (LP: #1876312)
 - .travis.yml: introduce caching (#329)
 - cc_locale: introduce schema (#335)
 - doc/rtd/conf.py: bump copyright year to 2020 (#341)
 - yum_add_repo: Add Centos to the supported distro list (#340)

20.2
 - doc/format: reference make-mime.py instead of an inline script (#334)
 - Add docs about  creating parent folders (#330) [Adrian Wilkins]
 - DataSourceNoCloud/OVF: drop claim to support FTP (#333) (LP: #1875470)
 - schema: ignore spurious pylint error (#332)
 - schema: add json schema for write_files module (#152)
 - BSD: find_devs_with_ refactoring (#298) [Gonéri Le Bouder]
 - nocloud: drop work around for Linux 2.6 (#324) [Gonéri Le Bouder]
 - cloudinit: drop dependencies on unittest2 and contextlib2 (#322)
 - distros: handle a potential mirror filtering error case (#328)
 - log: remove unnecessary import fallback logic (#327)
 - .travis.yml: don't run integration test on ubuntu/* branches (#321)
 - More unit test documentation (#314)
 - conftest: introduce disable_subp_usage autouse fixture (#304)
 - YAML align indent sizes for docs readability  (#323) [Tak Nishigori]
 - network_state: add missing space to log message (#325)
 - tests: add missing mocks for get_interfaces_by_mac (#326) (LP: #1873910)
 - test_mounts: expand happy path test for both happy paths (#319)
 - cc_mounts: fix incorrect format specifiers (#316) (LP: #1872836)
 - swap file "size" being used before checked if str (#315) [Eduardo Otubo]
 - HACKING.rst: add pytest version gotchas section (#311)
 - docs: Add steps to re-run cloud-id and cloud-init (#313) [Joshua Powers]
 - readme: OpenBSD is now supported (#309) [Gonéri Le Bouder]
 - net: ignore 'renderer' key in netplan config (#306) (LP: #1870421)
 - Add support for NFS/EFS mounts (#300) [Andrew Beresford] (LP: #1870370)
 - openbsd: set_passwd should not unlock user (#289) [Gonéri Le Bouder]
 - tools/.github-cla-signers: add beezly as CLA signer (#301)
 - util: remove unnecessary lru_cache import fallback (#299)
 - HACKING.rst: reorganise/update CLA signature info (#297)
 - distros: drop leading/trailing hyphens from mirror URL labels (#296)
 - HACKING.rst: add note about variable annotations (#295)
 - CiTestCase: stop using and remove sys_exit helper (#283)
 - distros: replace invalid characters in mirror URLs with hyphens (#291)
   (LP: #1868232)
 - rbxcloud: gracefully handle arping errors (#262) [Adam Dobrawy]
 - Fix cloud-init ignoring some misdeclared mimetypes in user-data.
   [Kurt Garloff]
 - net: ubuntu focal prioritize netplan over eni even if both present
   (#267) (LP: #1867029)
 - cloudinit: refactor util.is_ipv4 to net.is_ipv4_address (#292)
 - net/cmdline: replace type comments with annotations (#294)
 - HACKING.rst: add Type Annotations design section (#293)
 - net: introduce is_ip_address function (#288)
 - CiTestCase: remove now-unneeded parse_and_read helper method (#286)
 - .travis.yml: allow 30 minutes of inactivity in cloud tests (#287)
 - sources/tests/test_init: drop use of deprecated inspect.getargspec (#285)
 - setup.py: drop NIH check_output implementation (#282)
 - Identify SAP Converged Cloud as OpenStack [Silvio Knizek]
 - add Openbsd support (#147) [Gonéri Le Bouder]
 - HACKING.rst: add examples of the two test class types (#278)
 - VMWware: support to update guest info gc status if enabled (#261)
   [xiaofengw-vmware]
 - Add lp-to-git mapping for kgarloff (#279)
 - set_passwords: avoid chpasswd on BSD (#268) [Gonéri Le Bouder]
 - HACKING.rst: add Unit Testing design section (#277)
 - util: read_cc_from_cmdline handle urlencoded yaml content (#275)
 - distros/tests/test_init: add tests for _get_package_mirror_info (#272)
 - HACKING.rst: add links to new Code Review Process doc (#276)
 - freebsd: ensure package update works (#273) [Gonéri Le Bouder]
 - doc: introduce Code Review Process documentation (#160)
 - tools: use python3 (#274)
 - cc_disk_setup: fix RuntimeError (#270) (LP: #1868327)
 - cc_apt_configure/util: combine search_for_mirror implementations (#271)
 - bsd: boottime does not depend on the libc soname (#269)
   [Gonéri Le Bouder]
 - test_oracle,DataSourceOracle: sort imports (#266)
 - DataSourceOracle: update .network_config docstring (#257)
 - cloudinit/tests: remove unneeded with_logs configuration (#263)
 - .travis.yml: drop stale comment (#255)
 - .gitignore: add more common directories (#258)
 - ec2: render network on all NICs and add secondary IPs as static (#114)
   (LP: #1866930)
 - ec2 json validation: fix the reference to the 'merged_cfg' key (#256)
   [Paride Legovini]
 - releases.yaml: quote the Ubuntu version numbers (#254) [Paride Legovini]
 - cloudinit: remove six from packaging/tooling (#253)
 - util/netbsd: drop six usage (#252)
 - workflows: introduce stale pull request workflow (#125)
 - cc_resolv_conf: introduce tests and stabilise output across Python
   versions (#251)
 - fix minor issue with resolv_conf template (#144) [andreaf74]
 - doc: CloudInit also support NetBSD (#250) [Gonéri Le Bouder]
 - Add Netbsd support (#62) [Gonéri Le Bouder]
 - tox.ini: avoid substition syntax that causes a traceback on xenial (#245)
 - Add pub_key_ed25519 to cc_phone_home (#237) [Daniel Hensby]
 - Introduce and use of a list of GitHub usernames that have signed CLA
   (#244)
 - workflows/cla.yml: use correct username for CLA check (#243)
 - tox.ini: use xenial version of jsonpatch in CI (#242)
 - workflows: CLA validation altered to fail status on pull_request (#164)
 - tox.ini: bump pyflakes version to 2.1.1 (#239)
 - cloudinit: move to pytest for running tests (#211)
 - instance-data: add cloud-init merged_cfg and sys_info keys to json
   (#214) (LP: #1865969)
 - ec2: Do not fallback to IMDSv1 on EC2 (#216)
 - instance-data: write redacted cfg to instance-data.json (#233)
   (LP: #1865947)
 - net: support network-config:disabled on the kernel commandline (#232)
   (LP: #1862702)
 - ec2: only redact token request headers in logs, avoid altering request
   (#230) (LP: #1865882)
 - docs: typo fixed: dta → data [Alexey Vazhnov]
 - Fixes typo on Amazon Web Services (#217) [Nick Wales]
 - Fix docs for OpenStack DMI Asset Tag (#228)
   [Mark T. Voelker] (LP: #1669875)
 - Add physical network type: cascading to openstack helpers (#200)
   [sab-systems]
 - tests: add focal integration tests for ubuntu (#225)

20.1
 - ec2: Do not log IMDSv2 token values, instead use REDACTED (#219)
   (LP: #1863943)
 - utils: use SystemRandom when generating random password. (#204)
   [Dimitri John Ledkov]
 - docs: mount_default_files is a list of 6 items, not 7 (#212)
 - azurecloud: fix issues with instances not starting (#205) (LP: #1861921)
 - unittest: fix stderr leak in cc_set_password random unittest
   output. (#208)
 - cc_disk_setup: add swap filesystem force flag (#207)
 - import sysvinit patches from freebsd-ports tree (#161) [Igor Galić]
 - docs: fix typo (#195) [Edwin Kofler]
 - sysconfig: distro-specific config rendering for BOOTPROTO option (#162)
   [Robert Schweikert] (LP: #1800854)
 - cloudinit: replace "from six import X" imports (except in util.py) (#183)
 - run-container: use 'test -n' instead of 'test ! -z' (#202)
   [Paride Legovini]
 - net/cmdline: correctly handle static ip= config (#201)
   [Dimitri John Ledkov] (LP: #1861412)
 - Replace mock library with unittest.mock (#186)
 - HACKING.rst: update CLA link (#199)
 - Scaleway: Fix DatasourceScaleway to avoid backtrace (#128)
   [Louis Bouchard]
 - cloudinit/cmd/devel/net_convert.py: add missing space (#191)
 - tools/run-container: drop support for python2 (#192) [Paride Legovini]
 - Print ssh key fingerprints using sha256 hash (#188) (LP: #1860789)
 - Make the RPM build use Python 3 (#190) [Paride Legovini]
 - cc_set_password: increase random pwlength from 9 to 20 (#189)
   (LP: #1860795)
 - .travis.yml: use correct Python version for xenial tests (#185)
 - cloudinit: remove ImportError handling for mock imports (#182)
 - Do not use fallocate in swap file creation on xfs. (#70)
   [Eduardo Otubo] (LP: #1781781)
 - .readthedocs.yaml: install cloud-init when building docs (#181)
   (LP: #1860450)
 - Introduce an RTD config file, and pin the Sphinx version to the RTD
   default (#180)
 - Drop most of the remaining use of six (#179)
 - Start removing dependency on six (#178)
 - Add Rootbox & HyperOne to list of cloud in README (#176) [Adam Dobrawy]
 - docs: add proposed SRU testing procedure (#167)
 - util: rename get_architecture to get_dpkg_architecture (#173)
 - Ensure util.get_architecture() runs only once (#172)
 - Only use gpart if it is the BSD gpart (#131) [Conrad Hoffmann]
 - freebsd: remove superflu exception mapping (#166) [Gonéri Le Bouder]
 - ssh_auth_key_fingerprints_disable test: fix capitalization (#165)
   [Paride Legovini]
 - util: move uptime's else branch into its own boottime function (#53)
   [Igor Galić] (LP: #1853160)
 - workflows: add contributor license agreement checker (#155)
 - net: fix rendering of 'static6' in network config (#77) (LP: #1850988)
 - Make tests work with Python 3.8 (#139) [Conrad Hoffmann]
 - fixed minor bug with mkswap in cc_disk_setup.py (#143) [andreaf74]
 - freebsd: fix create_group() cmd (#146) [Gonéri Le Bouder]
 - doc: make apt_update example consistent (#154)
 - doc: add modules page toc with links (#153) (LP: #1852456)
 - Add support for the amazon variant in cloud.cfg.tmpl (#119)
   [Frederick Lefebvre]
 - ci: remove Python 2.7 from CI runs (#137)
 - modules: drop cc_snap_config config module (#134)
 - migrate-lp-user-to-github: ensure Launchpad repo exists (#136)
 - docs: add initial troubleshooting to FAQ (#104) [Joshua Powers]
 - doc: update cc_set_hostname frequency and descrip (#109)
   [Joshua Powers] (LP: #1827021)
 - freebsd: introduce the freebsd renderer (#61) [Gonéri Le Bouder]
 - cc_snappy: remove deprecated module (#127)
 - HACKING.rst: clarify that everyone needs to do the LP->GH dance (#130)
 - freebsd: cloudinit service requires devd (#132) [Gonéri Le Bouder]
 - cloud-init: fix capitalisation of SSH (#126)
 - doc: update cc_ssh clarify host and auth keys
   [Joshua Powers] (LP: #1827021)
 - ci: emit names of tests run in Travis (#120)

19.4
 - doc: specify _ over - in cloud config modules
   [Joshua Powers] (LP: #1293254)
 - tools: Detect python to use via env in migrate-lp-user-to-github
   [Adam Dobrawy]
 - Partially revert "fix unlocking method on FreeBSD" (#116)
 - tests: mock uid when running as root (#113)
   [Joshua Powers] (LP: #1856096)
 - cloudinit/netinfo: remove unused getgateway (#111)
 - docs: clear up apt config sections (#107) [Joshua Powers] (LP: #1832823)
 - doc: add kernel command line option to user data (#105)
   [Joshua Powers] (LP: #1846524)
 - config/cloud.cfg.d: update README [Joshua Powers] (LP: #1855006)
 - azure: avoid re-running cloud-init when instance-id is byte-swapped
   (#84) [AOhassan]
 - fix unlocking method on FreeBSD [Igor Galić] (LP: #1854594)
 - debian: add reference to the manpages [Joshua Powers]
 - ds_identify: if /sys is not available use dmidecode (#42)
   [Igor Galić] (LP: #1852442)
 - docs: add cloud-id manpage [Joshua Powers]
 - docs: add cloud-init-per manpage [Joshua Powers]
 - docs: add cloud-init manpage [Joshua Powers]
 - docs: add additional details to per-instance/once [Joshua Powers]
 - Update doc-requirements.txt [Joshua Powers]
 - doc-requirements: add missing dep [Joshua Powers]
 - dhcp: Support Red Hat dhcp rfc3442 lease format for option 121 (#76)
   [Eric Lafontaine] (LP: #1850642)
 - network_state: handle empty v1 config (#45) (LP: #1852496)
 - docs: Add document on how to report bugs [Joshua Powers]
 - Add an Amazon distro in the redhat OS family [Frederick Lefebvre]
 - removed a couple of "the"s [gaughen]
 - docs: fix line length and remove highlighting [Joshua Powers]
 - docs: Add security.md to readthedocs [Joshua Powers]
 - Multiple file fix for AuthorizedKeysFile config (#60) [Eduardo Otubo]
 - Revert "travis: only run CI on pull requests"
 - doc: update links on README.md [Joshua Powers]
 - doc: Updates to wording of README.md [Joshua Powers]
 - Add security.md [Joshua Powers]
 - setup.py: Amazon Linux sets libexec to /usr/libexec (#52)
   [Frederick Lefebvre]
 - Fix linting failure in test_url_helper (#83) [Eric Lafontaine]
 - url_helper: read_file_or_url should pass headers param into readurl
   (#66) (LP: #1854084)
 - dmidecode: log result *after* stripping n [Igor Galić]
 - cloud_tests: add azure platform support to integration tests
   [ahosmanmsft]
 - set_passwords: support for FreeBSD (#46) [Igor Galić]
 - tools: migrate-lp-user-to-github removes repo_dir if created (#35)
 - Correct jumbled documentation for cc_set_hostname module (#64)
   [do3meli] (LP: #1853543)
 - FreeBSD: fix for get_linux_distro() and lru_cache (#59)
   [Igor Galić] (LP: #1815030)
 - ec2: Add support for AWS IMDS v2 (session-oriented) (#55)
 - tests: Fix cloudsigma tests when no dmidecode data is present. (#57)
   [Scott Moser]
 - net: IPv6, accept_ra, slaac, stateless (#51)
   [Harald] (LP: #1806014, #1808647)
 - docs: Update the configdrive datasource links (#44)
   [Joshua Powers] (LP: #1852461)
 - distro: correctly set usr_lib_exec path for FreeBSD distro (#40)
   [Igor Galić] (LP: #1852491)
 - azure: support secondary ipv6 addresses (#33)
 - Fix metadata check when local-hostname is null (#32)
   [Mark Goddard] (LP: #1852100)
 - switch default FreeBSD salt minion pkg from py27 to py36
   [Dominic Schlegel]
 - travis: only run CI on pull requests
 - add data-server dns entry as new metadata server detection [Joshua Hügli]
 - pycodestyle: remove unused local variable
 - reporting: Using a uuid to enforce uniqueness on the KVP keys. [momousta]
 - docs: touchups in rtd intro and README.md
 - doc: update launchpad git refs to github
 - github: drop pull-request template to prepare for migration
 - tools: add migrate-lp-user-to-github script to link LP to github
 - github: new basic project readme

19.3
 - azure: support matching dhcp route-metrics for dual-stack ipv4 ipv6
   (LP: #1850308)
 - configdrive: fix subplatform config-drive for /config-drive source
   [David Kindred] (LP: #1849731)
 - DataSourceSmartOS: reconfigure network on each boot
   [Mike Gerdts] (LP: #1765801)
 - Add config for ssh-key import and consuming user-data [Pavel Zakharov]
 - net: fix subnet_is_ipv6() for stateless|stateful
   [Harald Jensås] (LP: #1848690)
 - OVF: disable custom script execution by default [Xiaofeng Wang]
 - cc_puppet: Implement csr_attributes.yaml support [Matthias Baur]
 - cloud-init.service: on centos/fedora/redhat wait on NetworkManager.service
   (LP: #1843334)
 - azure: Do not lock user on instance id change [Sam Eiderman] (LP: #1849677)
 - net/netplan: use ipv6-mtu key for specifying ipv6 mtu values
 - Fix usages of yaml, and move yaml_dump to safeyaml.dumps. (LP: #1849640)
 - exoscale: Increase url_max_wait to 120s. [Chris Glass]
 - net/sysconfig: fix available check on SUSE distros
   [Robert Schweikert] (LP: #1849378)
 - docs: Fix incorrect Azure IMDS IP address [Joshua Powers] (LP: #1849508)
 - introduce .travis.yml
 - net: enable infiniband support in eni and sysconfig renderers
   [Darren Birkett] (LP: #1847114)
 - guestcust_util: handle special characters in config file [Xiaofeng Wang]
 - fix some more typos in comments [Dominic Schlegel]
 - replace any deprecated log.warn with log.warning
   [Dominic Schlegel] (LP: #1508442)
 - net: handle openstack dhcpv6-stateless configuration
   [Harald Jensås] (LP: #1847517)
 - Add .venv/ to .gitignore [Dominic Schlegel]
 - Small typo fixes in code comments. [Dominic Schlegel]
 - cloud_test/lxd: Retry container delete a few times
 - Add Support for e24cloud to Ec2 datasource. (LP: #1696476)
 - Add RbxCloud datasource [Adam Dobrawy]
 - get_interfaces: don't exclude bridge and bond members (LP: #1846535)
 - Add support for Arch Linux in render-cloudcfg [Conrad Hoffmann]
 - util: json.dumps on python 2.7 will handle UnicodeDecodeError on binary
   (LP: #1801364)
 - debian/ubuntu: add missing word to netplan/ENI header (LP: #1845669)
 - ovf: do not generate random instance-id for IMC customization path
 - sysconfig: only write resolv.conf if network_state has DNS values
   (LP: #1843634)
 - sysconfig: use distro variant to check if available (LP: #1843584)
 - systemd/cloud-init.service.tmpl: start after wicked.service
   [Robert Schweikert]
 - docs: fix zstack documentation lints
 - analyze/show: remove trailing space in output
 - Add missing space in warning: "not avalid seed" [Brian Candler]
 - pylintrc: add 'enter_context' to generated-members list
 - Add datasource for ZStack platform. [Shixin Ruan] (LP: #1841181)
 - docs: organize TOC and update summary of project [Joshua Powers]
 - tools: make clean now cleans the dev directory, not the system
 - docs: create cli specific page [Joshua Powers]
 - docs: added output examples to analyze.rst [Joshua Powers]
 - docs: doc8 fixes for instancedata page [Joshua Powers]
 - docs: clean up formatting, organize boot page [Joshua Powers]
 - net: add is_master check for filtering device list (LP: #1844191)
 - docs: more complete list of availability [Joshua Powers]
 - docs: start FAQ page [Joshua Powers]
 - docs: cleanup output & order of datasource page [Joshua Powers]
 - Brightbox: restrict detection to require full domain match .brightbox.com
 - VMWware: add option into VMTools config to enable/disable custom script.
   [Xiaofeng Wang]
 - net,Oracle: Add support for netfailover detection
 - atomic_helper: add DEBUG logging to write_file (LP: #1843276)
 - doc: document doc, create makefile and tox target [Joshua Powers]
 - .gitignore: ignore files produced by package builds
 - docs: fix whitespace, spelling, and line length [Joshua Powers]
 - docs: remove unnecessary file in doc directory [Joshua Powers]
 - Oracle: Render secondary vnic IP and MTU values only
 - exoscale: fix sysconfig cloud_config_modules overrides (LP: #1841454)
 - net/cmdline: refactor to allow multiple initramfs network config sources
 - ubuntu-drivers: call db_x_loadtemplatefile to accept NVIDIA EULA
   (LP: #1840080)
 - Add missing #cloud-config comment on first example in documentation.
   [Florian Müller]
 - ubuntu-drivers: emit latelink=true debconf to accept nvidia eula
   (LP: #1840080)
 - DataSourceOracle: prefer DS network config over initramfs
 - format.rst: add text/jinja2 to list of content types (+ cleanups)
 - Add GitHub pull request template to point people at hacking doc
 - cloudinit/distros/parsers/sys_conf: add docstring to SysConf
 - pyflakes: remove unused variable [Joshua Powers]
 - Azure: Record boot timestamps, system information, and diagnostic events
   [Anh Vo]
 - DataSourceOracle: configure secondary NICs on Virtual Machines
 - distros: fix confusing variable names
 - azure/net: generate_fallback_nic emits network v2 config instead of v1
 - Add support for publishing host keys to GCE guest attributes [Rick Wright]
 - New data source for the Exoscale.com cloud platform [Chris Glass]
 - doc: remove intersphinx extension
 - cc_set_passwords: rewrite documentation (LP: #1838794)
 - net/cmdline: split interfaces_by_mac and init network config determination
 - stages: allow data sources to override network config source order
 - cloud_tests: updates and fixes
 - Fix bug rendering MTU on bond or vlan when input was netplan. (LP: #1836949)
 - net: update net sequence, include wait on netdevs, opensuse netrules path
   (LP: #1817368)
19.2:
 - net: add rfc3442 (classless static routes) to EphemeralDHCP
   (LP: #1821102)
 - templates/ntp.conf.debian.tmpl: fix missing newline for pools
   (LP: #1836598)
 - Support netplan renderer in Arch Linux [Conrad Hoffmann]
 - Fix typo in publicly viewable documentation. [David Medberry]
 - Add a cdrom size checker for OVF ds to ds-identify
   [Pengpeng Sun] (LP: #1806701)
 - VMWare: Trigger the post customization script via cc_scripts module.
   [Xiaofeng Wang] (LP: #1833192)
 - Cloud-init analyze module: Added ability to analyze boot events.
   [Sam Gilson]
 - Update debian eni network configuration location, retain Ubuntu setting
   [Janos Lenart]
 - net: skip bond interfaces in get_interfaces
   [Stanislav Makar] (LP: #1812857)
 - Fix a couple of issues raised by a coverity scan
 - Add missing dsname for Hetzner Cloud datasource [Markus Schade]
 - doc: indicate that netplan is default in Ubuntu now
 - azure: add region and AZ properties from imds compute location metadata
 - sysconfig: support more bonding options [Penghui Liao]
 - cloud-init-generator: use libexec path to ds-identify on redhat systems
   (LP: #1833264)
 - tools/build-on-freebsd: update to python3 [Gonéri Le Bouder]
 - Allow identification of OpenStack by Asset Tag
   [Mark T. Voelker] (LP: #1669875)
 - Fix spelling error making 'an Ubuntu' consistent. [Brian Murray]
 - run-container: centos: comment out the repo mirrorlist [Paride Legovini]
 - netplan: update netplan key mappings for gratuitous-arp (LP: #1827238)
 - freebsd: fix the name of cloudcfg VARIANT [Gonéri Le Bouder]
 - freebsd: ability to grow root file system [Gonéri Le Bouder]
 - freebsd: NoCloud data source support [Gonéri Le Bouder] (LP: #1645824)
 - Azure: Return static fallback address as if failed to find endpoint
   [Jason Zions (MSFT)]

19.1:
  - freebsd: add chpasswd pkg in the image [Gonéri Le Bouder]
  - tests: add Eoan release [Paride Legovini]
  - cc_mounts: check if mount -a on no-change fstab path
    [Jason Zions (MSFT)] (LP: #1825596)
  - replace remaining occurrences of LOG.warn [Daniel Watkins]
  - DataSourceAzure: Adjust timeout for polling IMDS [Anh Vo]
  - Azure: Changes to the Hyper-V KVP Reporter [Anh Vo]
  - git tests: no longer show warning about safe yaml.
  - tools/read-version: handle errors [Chad Miller]
  - net/sysconfig: only indicate available on known sysconfig distros
    (LP: #1819994)
  - packages: update rpm specs for new bash completion path
    [Daniel Watkins] (LP: #1825444)
  - test_azure: mock util.SeLinuxGuard where needed
    [Jason Zions (MSFT)] (LP: #1825253)
  - setup.py: install bash completion script in new location [Daniel Watkins]
  - mount_cb: do not pass sync and rw options to mount
    [Gonéri Le Bouder] (LP: #1645824)
  - cc_apt_configure: fix typo in apt documentation [Dominic Schlegel]
  - Revert "DataSource: move update_events from a class to an instance..."
    [Daniel Watkins]
  - Change DataSourceNoCloud to ignore file system label's case.
    [Risto Oikarinen]
  - cmd:main.py: Fix missing 'modules-init' key in modes dict
    [Antonio Romito] (LP: #1815109)
  - ubuntu_advantage: rewrite cloud-config module
  - Azure: Treat _unset network configuration as if it were absent
    [Jason Zions (MSFT)] (LP: #1823084)
  - DatasourceAzure: add additional logging for azure datasource [Anh Vo]
  - cloud_tests: fix apt_pipelining test-cases
  - Azure: Ensure platform random_seed is always serializable as JSON.
    [Jason Zions (MSFT)]
  - net/sysconfig: write out SUSE-compatible IPv6 config [Robert Schweikert]
  - tox: Update testenv for openSUSE Leap to 15.0 [Thomas Bechtold]
  - net: Fix ipv6 static routes when using eni renderer
    [Raphael Glon] (LP: #1818669)
  - Add ubuntu_drivers config module [Daniel Watkins]
  - doc: Refresh Azure walinuxagent docs [Daniel Watkins]
  - tox: bump pylint version to latest (2.3.1) [Daniel Watkins]
  - DataSource: move update_events from a class to an instance attribute
    [Daniel Watkins] (LP: #1819913)
  - net/sysconfig: Handle default route setup for dhcp configured NICs
    [Robert Schweikert] (LP: #1812117)
  - DataSourceEc2: update RELEASE_BLOCKER to be more accurate
    [Daniel Watkins]
  - cloud-init-per: POSIX sh does not support string subst, use sed
    (LP: #1819222)
  - Support locking user with usermod if passwd is not available.
  - Example for Microsoft Azure data disk added. [Anton Olifir]
  - clean: correctly determine the path for excluding seed directory
    [Daniel Watkins] (LP: #1818571)
  - helpers/openstack: Treat unknown link types as physical
    [Daniel Watkins] (LP: #1639263)
  - drop Python 2.6 support and our NIH version detection [Daniel Watkins]
  - tip-pylint: Fix assignment-from-return-none errors
  - net: append type:dhcp[46] only if dhcp[46] is True in v2 netconfig
    [Kurt Stieger] (LP: #1818032)
  - cc_apt_pipelining: stop disabling pipelining by default
    [Daniel Watkins] (LP: #1794982)
  - tests: fix some slow tests and some leaking state [Daniel Watkins]
  - util: don't determine string_types ourselves [Daniel Watkins]
  - cc_rsyslog: Escape possible nested set [Daniel Watkins] (LP: #1816967)
  - Enable encrypted_data_bag_secret support for Chef
    [Eric Williams] (LP: #1817082)
  - azure: Filter list of ssh keys pulled from fabric [Jason Zions (MSFT)]
  - doc: update merging doc with fixes and some additional details/examples
  - tests: integration test failure summary to use traceback if empty error
  - This is to fix https://bugs.launchpad.net/cloud-init/+bug/1812676
    [Vitaly Kuznetsov]
  - EC2: Rewrite network config on AWS Classic instances every boot
    [Guilherme G. Piccoli] (LP: #1802073)
  - netinfo: Adjust ifconfig output parsing for FreeBSD ipv6 entries
    (LP: #1779672)
  - netplan: Don't render yaml aliases when dumping netplan (LP: #1815051)
  - add PyCharm IDE .idea/ path to .gitignore [Dominic Schlegel]
  - correct grammar issue in instance metadata documentation
    [Dominic Schlegel] (LP: #1802188)
  - clean: cloud-init clean should not trace when run from within cloud_dir
    (LP: #1795508)
  - Resolve flake8 comparison and pycodestyle over-ident issues
    [Paride Legovini]
  - opennebula: also exclude epochseconds from changed environment vars
    (LP: #1813641)
  - systemd: Render generator from template to account for system
    differences. [Robert Schweikert]
  - sysconfig: On SUSE, use STARTMODE instead of ONBOOT
    [Robert Schweikert] (LP: #1799540)
  - flake8: use ==/!= to compare str, bytes, and int literals
    [Paride Legovini]
  - opennebula: exclude EPOCHREALTIME as known bash env variable with a
    delta (LP: #1813383)
  - tox: fix disco httpretty dependencies for py37 (LP: #1813361)
  - run-container: uncomment baseurl in yum.repos.d/*.repo when using a
    proxy [Paride Legovini]
  - lxd: install zfs-linux instead of zfs meta package
    [Johnson Shi] (LP: #1799779)
  - net/sysconfig: do not write a resolv.conf file with only the header.
    [Robert Schweikert]
  - net: Make sysconfig renderer compatible with Network Manager.
    [Eduardo Otubo]
  - cc_set_passwords: Fix regex when parsing hashed passwords
    [Marlin Cremers] (LP: #1811446)
  - net: Wait for dhclient to daemonize before reading lease file
    [Jason Zions] (LP: #1794399)
  - [Azure] Increase retries when talking to Wireserver during metadata walk
    [Jason Zions]
  - Add documentation on adding a datasource.
  - doc: clean up some datasource documentation.
  - ds-identify: fix wrong variable name in ovf_vmware_transport_guestinfo.
  - Scaleway: Support ssh keys provided inside an instance tag. [PORTE Loïc]
  - OVF: simplify expected return values of transport functions.
  - Vmware: Add support for the com.vmware.guestInfo OVF transport.
    (LP: #1807466)
  - HACKING.rst: change contact info to Josh Powers
  - Update to pylint 2.2.2.

18.5:
 - tests: add Disco release [Joshua Powers]
 - net: render 'metric' values in per-subnet routes (LP: #1805871)
 - write_files: add support for appending to files. [James Baxter]
 - config: On ubuntu select cloud archive mirrors for armel, armhf, arm64.
   (LP: #1805854)
 - dhclient-hook: cleanups, tests and fix a bug on 'down' event.
 - NoCloud: Allow top level 'network' key in network-config. (LP: #1798117)
 - ovf: Fix ovf network config generation gateway/routes (LP: #1806103)
 - azure: detect vnet migration via netlink media change event
   [Tamilmani Manoharan]
 - Azure: fix copy/paste error in error handling when reading azure ovf.
   [Adam DePue]
 - tests: fix incorrect order of mocks in test_handle_zfs_root.
 - doc: Change dns_nameserver property to dns_nameservers. [Tomer Cohen]
 - OVF: identify label iso9660 filesystems with label 'OVF ENV'.
 - logs: collect-logs ignore instance-data-sensitive.json on non-root user
   (LP: #1805201)
 - net: Ephemeral*Network: add connectivity check via URL
 - azure: _poll_imds only retry on 404. Fail on Timeout (LP: #1803598)
 - resizefs: Prefix discovered devpath with '/dev/' when path does not
   exist [Igor Galić]
 - azure: retry imds polling on requests.Timeout (LP: #1800223)
 - azure: Accept variation in error msg from mount for ntfs volumes
   [Jason Zions] (LP: #1799338)
 - azure: fix regression introduced when persisting ephemeral dhcp lease
   [asakkurr]
 - azure: add udev rules to create cloud-init Gen2 disk name symlinks
   (LP: #1797480)
 - tests: ec2 mock missing httpretty user-data and instance-identity routes
 - azure: remove /etc/netplan/90-hotplug-azure.yaml when net from IMDS
 - azure: report ready to fabric after reprovision and reduce logging
   [asakkurr] (LP: #1799594)
 - query: better error when missing read permission on instance-data
 - instance-data: fallback to instance-data.json if sensitive is absent.
   (LP: #1798189)
 - docs: remove colon from network v1 config example. [Tomer Cohen]
 - Add cloud-id binary to packages for SUSE [Jason Zions]
 - systemd: On SUSE ensure cloud-init.service runs before wicked
   [Robert Schweikert] (LP: #1799709)
 - update detection of openSUSE variants [Robert Schweikert]
 - azure: Add apply_network_config option to disable network from IMDS
   (LP: #1798424)
 - Correct spelling in an error message (udevadm). [Katie McLaughlin]
 - tests: meta_data key changed to meta-data in ec2 instance-data.json
   (LP: #1797231)
 - tests: fix kvm integration test to assert flexible config-disk path
   (LP: #1797199)
 - tools: Add cloud-id command line utility
 - instance-data: Add standard keys platform and subplatform. Refactor ec2.
 - net: ignore nics that have "zero" mac address. (LP: #1796917)
 - tests: fix apt_configure_primary to be more flexible
 - Ubuntu: update sources.list to comment out deb-src entries. (LP: #74747)

18.4:
 - add rtd example docs about new standardized keys
 - use ds._crawled_metadata instance attribute if set when writing
   instance-data.json
 - ec2: update crawled metadata. add standardized keys
 - tests: allow skipping an entire cloud_test without running.
 - tests: disable lxd tests on cosmic
 - cii-tests: use unittest2.SkipTest in ntp_chrony due to new deps
 - lxd: adjust to snap installed lxd.
 - docs: surface experimental doc in instance-data.json
 - tests: fix ec2 integration tests. process meta_data instead of meta-data
 - Add support for Infiniband network interfaces (IPoIB). [Mark Goddard]
 - cli: add cloud-init query subcommand to query instance metadata
 - tools/tox-venv: update for new features.
 - pylint: ignore warning assignment-from-no-return for _write_network
 - stages: Fix bug causing datasource to have incorrect sys_cfg.
   (LP: #1787459)
 - Remove dead-code _write_network distro implementations.
 - net_util: ensure static configs have netmask in translate_network result
   [Thomas Berger] (LP: #1792454)
 - Fall back to root:root on syslog permissions if other options fail.
   [Robert Schweikert]
 - tests: Add mock for util.get_hostname. [Robert Schweikert] (LP: #1792799)
 - ds-identify: doc string cleanup.
 - OpenStack: Support setting mac address on bond.
   [Fabian Wiesel] (LP: #1682064)
 - bash_completion/cloud-init: fix shell syntax error.
 - EphemeralIPv4Network: Be more explicit when adding default route.
   (LP: #1792415)
 - OpenStack: support reading of newer versions of metdata.
 - OpenStack: fix bug causing 'latest' version to be used from network.
   (LP: #1792157)
 - user-data: jinja template to render instance-data.json in cloud-config
   (LP: #1791781)
 - config: disable ssh access to a configured user account
 - tests: print failed testname instead of docstring upon failure
 - tests: Disallow use of util.subp except for where needed.
 - sysconfig: refactor sysconfig to accept distro specific templates paths
 - Add unit tests for config/cc_ssh.py [Francis Ginther]
 - Fix the built-in cloudinit/tests/helpers:skipIf
 - read-version: enhance error message [Joshua Powers]
 - hyperv_reporting_handler: simplify threaded publisher
 - VMWare: Fix a network config bug in vm with static IPv4 and no gateway.
   [Pengpeng Sun] (LP: #1766538)
 - logging: Add logging config type hyperv for reporting via Azure KVP
   [Andy Liu]
 - tests: disable other snap test as well [Joshua Powers]
 - tests: disable snap, fix write_files binary [Joshua Powers]
 - Add datasource Oracle Compute Infrastructure (OCI).
 - azure: allow azure to generate network configuration from IMDS per boot.
 - Scaleway: Add network configuration to the DataSource [Louis Bouchard]
 - docs: Fix example cloud-init analyze command to match output.
   [Wesley Gao]
 - netplan: Correctly render macaddress on a bonds and bridges when
   provided. (LP: #1784699)
 - tools: Add 'net-convert' subcommand command to 'cloud-init devel'.
 - redhat: remove ssh keys on new instance. (LP: #1781094)
 - Use typeset or local in profile.d scripts. (LP: #1784713)
 - OpenNebula: Fix null gateway6 [Akihiko Ota] (LP: #1768547)
 - oracle: fix detect_openstack to report True on OracleCloud.com DMI data
   (LP: #1784685)
 - tests: improve LXDInstance trying to workaround or catch bug.
 - update_metadata re-config on every boot comments and tests not quite
   right [Mike Gerdts]
 - tests: Collect build_info from system if available.
 - pylint: Fix pylint warnings reported in pylint 2.0.0.
 - get_linux_distro: add support for rhel via redhat-release.
 - get_linux_distro: add support for centos6 and rawhide flavors of redhat
   (LP: #1781229)
 - tools: add '--debug' to tools/net-convert.py
 - tests: bump the version of paramiko to 2.4.1.
 - docs: note in rtd about avoiding /tmp when writing files (LP: #1727876)
 - ubuntu,centos,debian: get_linux_distro to align with platform.dist
   (LP: #1780481)
 - Fix boothook docs on environment variable name (INSTANCE_I ->
   INSTANCE_ID) [Marc Tamsky]
 - update_metadata: a datasource can support network re-config every boot
 - tests: drop salt-minion integration test (LP: #1778737)
 - Retry on failed import of gpg receive keys.
 - tools: Fix run-container when neither source or binary package requested.
 - docs: Fix a small spelling error. [Oz N Tiram]
 - tox: use simplestreams from git repository rather than bzr.

18.3:
 - docs: represent sudo:false in docs for user_groups config module
 - Explicitly prevent `sudo` access for user module
   [Jacob Bednarz] (LP: #1771468)
 - lxd: Delete default network and detach device if lxd-init created them.
   (LP: #1776958)
 - openstack: avoid unneeded metadata probe on non-openstack platforms
   (LP: #1776701)
 - stages: fix tracebacks if a module stage is undefined or empty
   [Robert Schweikert] (LP: #1770462)
 - Be more safe on string/bytes when writing multipart user-data to disk.
   (LP: #1768600)
 - Fix get_proc_env for pids that have non-utf8 content in environment.
   (LP: #1775371)
 - tests: fix salt_minion integration test on bionic and later
 - tests: provide human-readable integration test summary when --verbose
 - tests: skip chrony integration tests on lxd running artful or older
 - test: add optional --preserve-instance arg to integraiton tests
 - netplan: fix mtu if provided by network config for all rendered types
   (LP: #1774666)
 - tests: remove pip install workarounds for pylxd, take upstream fix.
 - subp: support combine_capture argument.
 - tests: ordered tox dependencies for pylxd install
 - util: add get_linux_distro function to replace platform.dist
   [Robert Schweikert] (LP: #1745235)
 - pyflakes: fix unused variable references identified by pyflakes 2.0.0.
 - - Do not use the systemd_prefix macro, not available in this environment
   [Robert Schweikert]
 - doc: Add config info to ec2, openstack and cloudstack datasource docs
 - Enable SmartOS network metadata to work with netplan via per-subnet
   routes [Dan McDonald] (LP: #1763512)
 - openstack: Allow discovery in init-local using dhclient in a sandbox.
   (LP: #1749717)
 - tests: Avoid using https in httpretty, improve HttPretty test case.
   (LP: #1771659)
 - yaml_load/schema: Add invalid line and column nums to error message
 - Azure: Ignore NTFS mount errors when checking ephemeral drive
   [Paul Meyer]
 - packages/brpm: Get proper dependencies for cmdline distro.
 - packages: Make rpm spec files patch in package version like in debs.
 - tools/run-container: replace tools/run-centos with more generic.
 - Update version.version_string to contain packaged version. (LP: #1770712)
 - cc_mounts: Do not add devices to fstab that are already present.
   [Lars Kellogg-Stedman]
 - ds-identify: ensure that we have certain tokens in PATH. (LP: #1771382)
 - tests: enable Ubuntu Cosmic in integration tests [Joshua Powers]
 - read_file_or_url: move to url_helper, fix bug in its FileResponse.
 - cloud_tests: help pylint [Ryan Harper]
 - flake8: fix flake8 errors in previous commit.
 - typos: Fix spelling mistakes in cc_mounts.py log messages [Stephen Ford]
 - tests: restructure SSH and initial connections [Joshua Powers]
 - ds-identify: recognize container-other as a container, test SmartOS.
 - cloud-config.service: run After snap.seeded.service. (LP: #1767131)
 - tests: do not rely on host /proc/cmdline in test_net.py
   [Lars Kellogg-Stedman] (LP: #1769952)
 - ds-identify: Remove dupe call to is_ds_enabled, improve debug message.
 - SmartOS: fix get_interfaces for nics that do not have addr_assign_type.
 - tests: fix package and ca_cert cloud_tests on bionic
   (LP: #1769985)
 - ds-identify: make shellcheck 0.4.6 happy with ds-identify.
 - pycodestyle: Fix deprecated string literals, move away from flake8.
 - azure: Add reported ready marker file. [Joshua Chan] (LP: #1765214)
 - tools: Support adding a release suffix through packages/bddeb.
 - FreeBSD: Invoke growfs on ufs filesystems such that it does not prompt.
   [Harm Weites] (LP: #1404745)
 - tools: Re-use the orig tarball in packages/bddeb if it is around.
 - netinfo: fix netdev_pformat when a nic does not have an address
   assigned. (LP: #1766302)
 - collect-logs: add -v flag, write to stderr, limit journal to single
   boot. (LP: #1766335)
 - IBMCloud: Disable config-drive and nocloud only if IBMCloud is enabled.
   (LP: #1766401)
 - Add reporting events and log_time around early source of blocking time
   [Ryan Harper]
 - IBMCloud: recognize provisioning environment during debug boots.
   (LP: #1767166)
 - net: detect unstable network names and trigger a settle if needed
   [Ryan Harper] (LP: #1766287)
 - IBMCloud: improve documentation in datasource.
 - sysconfig: dhcp6 subnet type should not imply dhcpv4 [Vitaly Kuznetsov]
 - packages/debian/control.in: add missing dependency on iproute2.
   (LP: #1766711)
 - DataSourceSmartOS: add locking of serial device.
   [Mike Gerdts] (LP: #1746605)
 - DataSourceSmartOS: sdc:hostname is ignored [Mike Gerdts] (LP: #1765085)
 - DataSourceSmartOS: list() should always return a list
   [Mike Gerdts] (LP: #1763480)
 - schema: in validation, raise ImportError if strict but no jsonschema.
 - set_passwords: Add newline to end of sshd config, only restart if
   updated. (LP: #1677205)
 - pylint: pay attention to unused variable warnings.
 - doc: Add documentation for AliYun datasource. [Junjie Wang]
 - Schema: do not warn on duplicate items in commands. (LP: #1764264)
 - net: Depend on iproute2's ip instead of net-tools ifconfig or route
 - DataSourceSmartOS: fix hang when metadata service is down
   [Mike Gerdts] (LP: #1667735)
 - DataSourceSmartOS: change default fs on ephemeral disk from ext3 to
   ext4. [Mike Gerdts] (LP: #1763511)
 - pycodestyle: Fix invalid escape sequences in string literals.
 - Implement bash completion script for cloud-init command line
   [Ryan Harper]
 - tools: Fix make-tarball cli tool usage for development
 - renderer: support unicode in render_from_file.
 - Implement ntp client spec with auto support for distro selection
   [Ryan Harper] (LP: #1749722)
 - Apport: add Brightbox, IBM, LXD, and OpenTelekomCloud to list of clouds.
 - tests: fix ec2 integration network metadata validation
 - tests: fix integration tests to support lxd 3.0 release
 - correct documentation to match correct attribute name usage.
   [Dominic Schlegel] (LP: #1420018)
 - cc_resizefs, util: handle no /dev/zfs [Ryan Harper]
 - doc: Fix links in OpenStack datasource documentation.
   [Dominic Schlegel] (LP: #1721660)
 - docs: represent sudo:false in docs for user_groups config module
 - Explicitly prevent `sudo` access for user module
   [Jacob Bednarz] (LP: #1771468)
 - lxd: Delete default network and detach device if lxd-init created them.
   (LP: #1776958)
 - openstack: avoid unneeded metadata probe on non-openstack platforms
   (LP: #1776701)
 - stages: fix tracebacks if a module stage is undefined or empty
   [Robert Schweikert] (LP: #1770462)
 - Be more safe on string/bytes when writing multipart user-data to disk.
   (LP: #1768600)
 - Fix get_proc_env for pids that have non-utf8 content in environment.
   (LP: #1775371)
 - tests: fix salt_minion integration test on bionic and later
 - tests: provide human-readable integration test summary when --verbose
 - tests: skip chrony integration tests on lxd running artful or older
 - test: add optional --preserve-instance arg to integraiton tests
 - netplan: fix mtu if provided by network config for all rendered types
   (LP: #1774666)
 - tests: remove pip install workarounds for pylxd, take upstream fix.
 - subp: support combine_capture argument.
 - tests: ordered tox dependencies for pylxd install
 - util: add get_linux_distro function to replace platform.dist
   [Robert Schweikert] (LP: #1745235)
 - pyflakes: fix unused variable references identified by pyflakes 2.0.0.
 - - Do not use the systemd_prefix macro, not available in this environment
   [Robert Schweikert]
 - doc: Add config info to ec2, openstack and cloudstack datasource docs
 - Enable SmartOS network metadata to work with netplan via per-subnet
   routes [Dan McDonald] (LP: #1763512)
 - openstack: Allow discovery in init-local using dhclient in a sandbox.
   (LP: #1749717)
 - tests: Avoid using https in httpretty, improve HttPretty test case.
   (LP: #1771659)
 - yaml_load/schema: Add invalid line and column nums to error message
 - Azure: Ignore NTFS mount errors when checking ephemeral drive
   [Paul Meyer]
 - packages/brpm: Get proper dependencies for cmdline distro.
 - packages: Make rpm spec files patch in package version like in debs.
 - tools/run-container: replace tools/run-centos with more generic.
 - Update version.version_string to contain packaged version. (LP: #1770712)
 - cc_mounts: Do not add devices to fstab that are already present.
   [Lars Kellogg-Stedman]
 - ds-identify: ensure that we have certain tokens in PATH. (LP: #1771382)
 - tests: enable Ubuntu Cosmic in integration tests [Joshua Powers]
 - read_file_or_url: move to url_helper, fix bug in its FileResponse.
 - cloud_tests: help pylint [Ryan Harper]
 - flake8: fix flake8 errors in previous commit.
 - typos: Fix spelling mistakes in cc_mounts.py log messages [Stephen Ford]
 - tests: restructure SSH and initial connections [Joshua Powers]
 - ds-identify: recognize container-other as a container, test SmartOS.
 - cloud-config.service: run After snap.seeded.service. (LP: #1767131)
 - tests: do not rely on host /proc/cmdline in test_net.py
   [Lars Kellogg-Stedman] (LP: #1769952)
 - ds-identify: Remove dupe call to is_ds_enabled, improve debug message.
 - SmartOS: fix get_interfaces for nics that do not have addr_assign_type.
 - tests: fix package and ca_cert cloud_tests on bionic
   (LP: #1769985)
 - ds-identify: make shellcheck 0.4.6 happy with ds-identify.
 - pycodestyle: Fix deprecated string literals, move away from flake8.
 - azure: Add reported ready marker file. [Joshua Chan] (LP: #1765214)
 - tools: Support adding a release suffix through packages/bddeb.
 - FreeBSD: Invoke growfs on ufs filesystems such that it does not prompt.
   [Harm Weites] (LP: #1404745)
 - tools: Re-use the orig tarball in packages/bddeb if it is around.
 - netinfo: fix netdev_pformat when a nic does not have an address
   assigned. (LP: #1766302)
 - collect-logs: add -v flag, write to stderr, limit journal to single
   boot. (LP: #1766335)
 - IBMCloud: Disable config-drive and nocloud only if IBMCloud is enabled.
   (LP: #1766401)
 - Add reporting events and log_time around early source of blocking time
   [Ryan Harper]
 - IBMCloud: recognize provisioning environment during debug boots.
   (LP: #1767166)
 - net: detect unstable network names and trigger a settle if needed
   [Ryan Harper] (LP: #1766287)
 - IBMCloud: improve documentation in datasource.
 - sysconfig: dhcp6 subnet type should not imply dhcpv4 [Vitaly Kuznetsov]
 - packages/debian/control.in: add missing dependency on iproute2.
   (LP: #1766711)
 - DataSourceSmartOS: add locking of serial device.
   [Mike Gerdts] (LP: #1746605)
 - DataSourceSmartOS: sdc:hostname is ignored [Mike Gerdts] (LP: #1765085)
 - DataSourceSmartOS: list() should always return a list
   [Mike Gerdts] (LP: #1763480)
 - schema: in validation, raise ImportError if strict but no jsonschema.
 - set_passwords: Add newline to end of sshd config, only restart if
   updated. (LP: #1677205)
 - pylint: pay attention to unused variable warnings.
 - doc: Add documentation for AliYun datasource. [Junjie Wang]
 - Schema: do not warn on duplicate items in commands. (LP: #1764264)
 - net: Depend on iproute2's ip instead of net-tools ifconfig or route
 - DataSourceSmartOS: fix hang when metadata service is down
   [Mike Gerdts] (LP: #1667735)
 - DataSourceSmartOS: change default fs on ephemeral disk from ext3 to
   ext4. [Mike Gerdts] (LP: #1763511)
 - pycodestyle: Fix invalid escape sequences in string literals.
 - Implement bash completion script for cloud-init command line
   [Ryan Harper]
 - tools: Fix make-tarball cli tool usage for development
 - renderer: support unicode in render_from_file.
 - Implement ntp client spec with auto support for distro selection
   [Ryan Harper] (LP: #1749722)
 - Apport: add Brightbox, IBM, LXD, and OpenTelekomCloud to list of clouds.
 - tests: fix ec2 integration network metadata validation
 - tests: fix integration tests to support lxd 3.0 release
 - correct documentation to match correct attribute name usage.
   [Dominic Schlegel] (LP: #1420018)
 - cc_resizefs, util: handle no /dev/zfs [Ryan Harper]
 - doc: Fix links in OpenStack datasource documentation.
   [Dominic Schlegel] (LP: #1721660)

18.2:
 - Hetzner: Exit early if dmi system-manufacturer is not Hetzner.
 - Add missing dependency on isc-dhcp-client to trunk ubuntu packaging.
   (LP: #1759307)
 - FreeBSD: resizefs module now able to handle zfs/zpool.
   [Dominic Schlegel] (LP: #1721243)
 - cc_puppet: Revert regression of puppet creating ssl and ssl_cert dirs
 - Enable IBMCloud datasource in settings.py.
 - IBMCloud: Initial IBM Cloud datasource.
 - tests: remove jsonschema from xenial tox environment.
 - tests: Fix newly added schema unit tests to skip if no jsonschema.
 - ec2: Adjust ec2 datasource after exception_cb change.
 - Reduce AzurePreprovisioning HTTP timeouts.
   [Douglas Jordan] (LP: #1752977)
 - Revert the logic of exception_cb in read_url.
   [Kurt Garloff] (LP: #1702160, #1298921)
 - ubuntu-advantage: Add new config module to support
   ubuntu-advantage-tools
 - Handle global dns entries in netplan (LP: #1750884)
 - Identify OpenTelekomCloud Xen as OpenStack DS.
   [Kurt Garloff] (LP: #1756471)
 - datasources: fix DataSource subclass get_hostname method signature
   (LP: #1757176)
 - OpenNebula: Update network to return v2 config rather than ENI.
   [Akihiko Ota]
 - Add Hetzner Cloud DataSource
 - net: recognize iscsi root cases without ip= on kernel command line.
   (LP: #1752391)
 - tests: fix flakes warning for unused variable
 - tests: patch leaked stderr messages from snap unit tests
 - cc_snap: Add new module to install and configure snapd and snap
   packages.
 - tests: Make pylint happy and fix python2.6 uses of assertRaisesRegex.
 - netplan: render bridge port-priority values (LP: #1735821)
 - util: Fix subp regression. Allow specifying subp command as a string.
   (LP: #1755965)
 - doc: fix all warnings issued by 'tox -e doc'
 - FreeBSD: Set hostname to FQDN. [Dominic Schlegel] (LP: #1753499)
 - tests: fix run_tree and bddeb
 - tests: Fix some warnings in tests that popped up with newer python.
 - set_hostname: When present in metadata, set it before network bringup.
   (LP: #1746455)
 - tests: Centralize and re-use skipTest based on json schema presense.
 - This commit fixes get_hostname on the AzureDataSource.
   [Douglas Jordan] (LP: #1754495)
 - shellify: raise TypeError on bad input.
 - Make salt minion module work on FreeBSD.
   [Dominic Schlegel] (LP: #1721503)
 - Simplify some comparisions. [Rémy Léone]
 - Change some list creation and population to literal. [Rémy Léone]
 - GCE: fix reading of user-data that is not base64 encoded. (LP: #1752711)
 - doc: fix chef install from apt packages example in RTD.
 - Implement puppet 4 support [Romanos Skiadas] (LP: #1446804)
 - subp: Fix subp usage with non-ascii characters when no system locale.
   (LP: #1751051)
 - salt: configure grains in grains file rather than in minion config.
   [Daniel Wallace]

18.1:
 - OVF: Fix VMware support for 64-bit platforms. [Sankar Tanguturi]
 - ds-identify: Fix searching for iso9660 OVF cdroms. (LP: #1749980)
 - SUSE: Fix groups used for ownership of cloud-init.log [Robert Schweikert]
 - ds-identify: check /writable/system-data/ for nocloud seed.
   (LP: #1747070)
 - tests: run nosetests in cloudinit/ directory, fix py26 fallout.
 - tools: run-centos: git clone rather than tar.
 - tests: add support for logs with lxd from snap and future lxd 3.
   (LP: #1745663)
 - EC2: Fix get_instance_id called against cached datasource pickle.
   (LP: #1748354)
 - cli: fix cloud-init status to report running when before result.json
   (LP: #1747965)
 - net: accept network-config in netplan format for renaming interfaces
   (LP: #1709715)
 - Fix ssh keys validation in ssh_util [Tatiana Kholkina]
 - docs: Update RTD content for cloud-init subcommands.
 - OVF: Extend well-known labels to include OVFENV. (LP: #1698669)
 - Fix potential cases of uninitialized variables. (LP: #1744796)
 - tests: Collect script output as binary, collect systemd journal, fix lxd.
 - HACKING.rst: mention setting user name and email via git config.
 - Azure VM Preprovisioning support. [Douglas Jordan] (LP: #1734991)
 - tools/read-version: Fix read-version when in a git worktree.
 - docs: Fix typos in docs and one debug message. [Florian Grignon]
 - btrfs: support resizing if root is mounted ro.
   [Robert Schweikert] (LP: #1734787)
 - OpenNebula: Improve network configuration support.
   [Akihiko Ota] (LP: #1719157, #1716397, #1736750)
 - tests: Fix EC2 Platform to return console output as bytes.
 - tests: Fix attempted use of /run in a test case.
 - GCE: Improvements and changes to ssh key behavior for default user.
   [Max Illfelder] (LP: #1670456, #1707033, #1707037, #1707039)
 - subp: make ProcessExecutionError have expected types in stderr, stdout.
 - tests: when querying ntp server, do not do dns resolution.
 - Recognize uppercase vfat disk labels [James Penick] (LP: #1598783)
 - tests: remove zesty as supported OS to test [Joshua Powers]
 - Do not log warning on config files that represent None. (LP: #1742479)
 - tests: Use git hash pip dependency format for pylxd.
 - tests: add integration requirements text file [Joshua Powers]
 - MAAS: add check_instance_id based off oauth tokens. (LP: #1712680)
 - tests: update apt sources list test [Joshua Powers]
 - tests: clean up image properties [Joshua Powers]
 - tests: rename test ssh keys to avoid appearance of leaking private keys.
   [Joshua Powers]
 - tests: Enable AWS EC2 Integration Testing [Joshua Powers]
 - cli: cloud-init clean handles symlinks (LP: #1741093)
 - SUSE: Add a basic test of network config rendering. [Robert Schweikert]
 - Azure: Only bounce network when necessary. (LP: #1722668)
 - lint: Fix lints seen by pylint version 1.8.1.
 - cli: Fix error in cloud-init modules --mode=init. (LP: #1736600)

17.2:
 - ds-identify: failure in NoCloud due to unset variable usage.
   (LP: #1737704)
 - tests: fix collect_console when not implemented [Joshua Powers]
 - ec2: Use instance-identity doc for region and instance-id
   [Andrew Jorgensen]
 - tests: remove leaked tmp files in config drive tests.
 - setup.py: Do not include rendered files in SOURCES.txt
 - SUSE: remove delta in systemd local template for SUSE [Robert Schweikert]
 - tests: move to using tox 1.7.5
 - OVF: improve ds-identify to support finding OVF iso transport.
   (LP: #1731868)
 - VMware: Support for user provided pre and post-customization scripts
   [Maitreyee Saikia]
 - citest: In NoCloudKVM provide keys via metadata not userdata.
 - pylint: Update pylint to 1.7.1, run on tests/ and tools and fix
   complaints.
 - Datasources: Formalize DataSource get_data and related properties.
 - cli: Add clean and status subcommands
 - tests: consolidate platforms into specific dirs
 - ec2: Fix sandboxed dhclient background process cleanup. (LP: #1735331)
 - tests: NoCloudKVMImage do not modify the original local cache image.
 - tests: Enable bionic in integration tests. [Joshua Powers]
 - tests: Use apt-get to install a deb so that depends get resolved.
 - sysconfig: Correctly render dns and dns search info.
   [Ryan McCabe] (LP: #1705804)
 - integration test: replace curtin test ppa with cloud-init test ppa.
 - EC2: Fix bug using fallback_nic and metadata when restoring from cache.
   (LP: #1732917)
 - EC2: Kill dhclient process used in sandbox dhclient. (LP: #1732964)
 - ntp: fix configuration template rendering for openSUSE and SLES
   (LP: #1726572)
 - centos: Provide the failed #include url in error messages
 - Catch UrlError when #include'ing URLs [Andrew Jorgensen]
 - hosts: Fix openSUSE and SLES setup for /etc/hosts and clarify docs.
   [Robert Schweikert] (LP: #1731022)
 - rh_subscription: Perform null checks for enabled and disabled repos.
   [Dave Mulford]
 - Improve warning message when a template is not found.
   [Robert Schweikert] (LP: #1731035)
 - Replace the temporary i9n.brickies.net with i9n.cloud-init.io.
 - Azure: don't generate network configuration for SRIOV devices
   (LP: #1721579)
 - tests: address some minor feedback missed in last merge.
 - tests: integration test cleanup and full pass of nocloud-kvm.
 - Gentoo: chmod +x on all files in sysvinit/gentoo/
   [ckonstanski] (LP: #1727126)
 - EC2: Limit network config to fallback nic, fix local-ipv4 only
   instances. (LP: #1728152)
 - Gentoo: Use "rc-service" rather than "service".
   [Carlos Konstanski] (LP: #1727121)
 - resizefs: Fix regression when system booted with root=PARTUUID=
   (LP: #1725067)
 - tools: make yum package installation more reliable
 - citest: fix remaining warnings raised by integration tests.
 - citest: show the class actual class name in results.
 - ntp: fix config module schema to allow empty ntp config (LP: #1724951)
 - tools: disable fastestmirror if using proxy [Joshua Powers]
 - schema: Log debug instead of warning when jsonschema is not available.
   (LP: #1724354)
 - simpletable: Fix get_string method to return table-formatted string
   (LP: #1722566)
 - net: Handle bridge stp values of 0 and convert to boolean type
 - tools: Give specific --abbrev=8 to "git describe"
 - network: bridge_stp value not always correct (LP: #1721157)
 - tests: re-enable tox with nocloud-kvm support [Joshua Powers]
 - systemd: remove limit on tasks created by cloud-init-final.service.
   [Robert Schweikert] (LP: #1717969)
 - suse: Support addition of zypper repos via cloud-config.
   [Robert Schweikert] (LP: #1718675)
 - tests: Combine integration configs and testcases [Joshua Powers]
 - Azure, CloudStack: Support reading dhcp options from systemd-networkd.
   [Dimitri John Ledkov] (LP: #1718029)
 - packages/debian/copyright: remove mention of boto and MIT license
 - systemd: only mention Before=apt-daily.service on debian based distros.
   [Robert Schweikert]
 - Add missing simpletable and simpletable tests for failed merge
 - Remove prettytable dependency, introduce simpletable [Andrew Jorgensen]
 - debian/copyright: dep5 updates, reorganize, add Apache 2.0 license.
   [Joshua Powers] (LP: #1718681)
 - tests: remove dependency on shlex [Joshua Powers]
 - AltCloud: Trust PATH for udevadm and modprobe.
 - DataSourceOVF: use util.find_devs_with(TYPE=iso9660) (LP: #1718287)
 - tests: remove a temp file used in bootcmd tests.

17.1:
 - doc: document GCE datasource. [Arnd Hannemann]
 - suse: updates to templates to support openSUSE and SLES.
   [Robert Schweikert] (LP: #1718640)
 - suse: Copy sysvinit files from redhat with slight changes.
   [Robert Schweikert] (LP: #1718649)
 - docs: fix sphinx module schema documentation [Chad Smith]
 - tests: Add cloudinit package to all test targets [Chad Smith]
 - Makefile: No longer look for yaml files in obsolete ./bin/.
 - tests: fix ds-identify unit tests to set EC2_STRICT_ID_DEFAULT.
 - ec2: Fix maybe_perform_dhcp_discovery to use /var/tmp as a tmpdir
   [Chad Smith] (LP: #1717627)
 - Azure: wait longer for SSH pub keys to arrive.
   [Paul Meyer] (LP: #1717611)
 - GCE: Fix usage of user-data. (LP: #1717598)
 - cmdline: add collect-logs subcommand. [Chad Smith] (LP: #1607345)
 - CloudStack: consider dhclient lease files named with a hyphen.
   (LP: #1717147)
 - resizefs: Drop check for read-only device file, do not warn on
   overlayroot. [Chad Smith]
 - Do not provide systemd-fsck drop-in which could cause ordering cycles.
   [Balint Reczey] (LP: #1717477)
 - tests: Enable the NoCloud KVM platform [Joshua Powers]
 - resizefs: pass mount point to xfs_growfs [Dusty Mabe]
 - vmware: Enable nics before sending the SUCCESS event. [Sankar Tanguturi]
 - cloud-config modules: honor distros definitions in each module
   [Chad Smith] (LP: #1715738, #1715690)
 - chef: Add option to pin chef omnibus install version
   [Ethan Apodaca] (LP: #1462693)
 - tests: execute: support command as string [Joshua Powers]
 - schema and docs: Add jsonschema to resizefs and bootcmd modules
   [Chad Smith]
 - tools: Add xkvm script, wrapper around qemu-system [Joshua Powers]
 - vmware customization: return network config format
   [Sankar Tanguturi] (LP: #1675063)
 - Ec2: only attempt to operate at local mode on known platforms.
   (LP: #1715128)
 - Use /run/cloud-init for tempfile operations. (LP: #1707222)
 - ds-identify: Make OpenStack return maybe on arch other than intel.
   (LP: #1715241)
 - tests: mock missed openstack metadata uri network_data.json
   [Chad Smith] (LP: #1714376)
 - relocate tests/unittests/helpers.py to cloudinit/tests
   [Lars Kellogg-Stedman]
 - tox: add nose timer output [Joshua Powers]
 - upstart: do not package upstart jobs, drop ubuntu-init-switch module.
 - tests: Stop leaking calls through unmocked metadata addresses
   [Chad Smith] (LP: #1714117)
 - distro: allow distro to specify a default locale [Ryan Harper]
 - tests: fix two recently added tests for sles distro.
 - url_helper: dynamically import oauthlib import from inside oauth_headers
   [Chad Smith]
 - tox: make xenial environment run with python3.6
 - suse: Add support for openSUSE and return SLES to a working state.
   [Robert Schweikert]
 - GCE: Add a main to the GCE Datasource.
 - ec2: Add IPv6 dhcp support to Ec2DataSource. [Chad Smith] (LP: #1639030)
 - url_helper: fail gracefully if oauthlib is not available
   [Lars Kellogg-Stedman] (LP: #1713760)
 - cloud-init analyze: fix issues running under python 2. [Andrew Jorgensen]
 - Configure logging module to always use UTC time.
   [Ryan Harper] (LP: #1713158)
 - Log a helpful message if a user script does not include shebang.
   [Andrew Jorgensen]
 - cli: Fix command line parsing of coniditionally loaded subcommands.
   [Chad Smith] (LP: #1712676)
 - doc: Explain error behavior in user data include file format.
   [Jason Butz]
 - cc_landscape & cc_puppet: Fix six.StringIO use in writing configs
   [Chad Smith] (LP: #1699282, #1710932)
 - schema cli: Add schema subcommand to cloud-init cli and cc_runcmd schema
   [Chad Smith]
 - Debian: Remove non-free repositories from apt sources template.
   [Joonas Kylmälä] (LP: #1700091)
 - tools: Add tooling for basic cloud-init performance analysis.
   [Chad Smith] (LP: #1709761)
 - network: add v2 passthrough and fix parsing v2 config with bonds/bridge
   params [Ryan Harper] (LP: #1709180)
 - doc: update capabilities with features available, link doc reference,
   cli example [Ryan Harper]
 - vcloud directory: Guest Customization support for passwords
   [Maitreyee Saikia]
 - ec2: Allow Ec2 to run in init-local using dhclient in a sandbox.
   [Chad Smith] (LP: #1709772)
 - cc_ntp: fallback on timesyncd configuration if ntp is not installable
   [Ryan Harper] (LP: #1686485)
 - net: Reduce duplicate code. Have get_interfaces_by_mac use
   get_interfaces.
 - tests: Fix build tree integration tests [Joshua Powers]
 - sysconfig: Dont repeat header when rendering resolv.conf
   [Ryan Harper] (LP: #1701420)
 - archlinux: Fix bug with empty dns, do not render 'lo' devices.
   (LP: #1663045, #1706593)
 - cloudinit.net: add initialize_network_device function and tests
   [Chad Smith]
 - makefile: fix ci-deps-ubuntu target [Chad Smith]
 - tests: adjust locale integration test to parse default locale.
 - tests: remove 'yakkety' from releases as it is EOL.
 - tests: Add initial tests for EC2 and improve a docstring.
 - locale: Do not re-run locale-gen if provided locale is system default.
 - archlinux: fix set hostname usage of write_file.
   [Joshua Powers] (LP: #1705306)
 - sysconfig: support subnet type of 'manual'.
 - tools/run-centos: make running with no argument show help.
 - Drop rand_str() usage in DNS redirection detection
   [Bob Aman] (LP: #1088611)
 - sysconfig: use MACADDR on bonds/bridges to configure mac_address
   [Ryan Harper] (LP: #1701417)
 - net: eni route rendering missed ipv6 default route config
   [Ryan Harper] (LP: #1701097)
 - sysconfig: enable mtu set per subnet, including ipv6 mtu
   [Ryan Harper] (LP: #1702513)
 - sysconfig: handle manual type subnets [Ryan Harper] (LP: #1687725)
 - sysconfig: fix ipv6 gateway routes [Ryan Harper] (LP: #1694801)
 - sysconfig: fix rendering of bond, bridge and vlan types.
   [Ryan Harper] (LP: #1695092)
 - Templatize systemd unit files for cross distro deltas. [Ryan Harper]
 - sysconfig: ipv6 and default gateway fixes. [Ryan Harper] (LP: #1704872)
 - net: fix renaming of nics to support mac addresses written in upper
   case. (LP: #1705147)
 - tests: fixes for issues uncovered when moving to python 3.6.
   (LP: #1703697)
 - sysconfig: include GATEWAY value if set in subnet
   [Ryan Harper] (LP: #1686856)
 - Scaleway: add datasource with user and vendor data for Scaleway.
   [Julien Castets]
 - Support comments in content read by load_shell_content.
 - cloudinitlocal fail to run during boot [Hongjiang Zhang]
 - doc: fix disk setup example table_type options
   [Sandor Zeestraten] (LP: #1703789)
 - tools: Fix exception handling. [Joonas Kylmälä] (LP: #1701527)
 - tests: fix usage of mock in GCE test.
 - test_gce: Fix invalid mock of platform_reports_gce to return False
   [Chad Smith]
 - test: fix incorrect keyid for apt repository.
   [Joshua Powers] (LP: #1702717)
 - tests: Update version of pylxd [Joshua Powers]
 - write_files: Remove log from helper function signatures.
   [Andrew Jorgensen]
 - doc: document the cmdline options to NoCloud [Brian Candler]
 - read_dmi_data: always return None when inside a container. (LP: #1701325)
 - requirements.txt: remove trailing white space.
 - Azure: Add network-config, Refactor net layer to handle duplicate macs.
   [Ryan Harper]
 - Tests: Simplify the check on ssh-import-id [Joshua Powers]
 - tests: update ntp tests after sntp added [Joshua Powers]
 - FreeBSD: Make freebsd a variant, fix unittests and
   tools/build-on-freebsd.
 - FreeBSD: fix test failure
 - FreeBSD: replace ifdown/ifup with "ifconfig down" and "ifconfig up".
   [Hongjiang Zhang] (LP: #1697815)
 - FreeBSD: fix cdrom mounting failure if /mnt/cdrom/secure did not exist.
   [Hongjiang Zhang] (LP: #1696295)
 - main: Don't use templater to format the welcome message
   [Andrew Jorgensen]
 - docs: Automatically generate module docs form schema if present.
   [Chad Smith]
 - debian: fix path comment in /etc/hosts template.
   [Jens Sandmann] (LP: #1606406)
 - suse: add hostname and fully qualified domain to template.
   [Jens Sandmann]
 - write_file(s): Print permissions as octal, not decimal [Andrew Jorgensen]
 - ci deps: Add --test-distro to read-dependencies to install all deps
   [Chad Smith]
 - tools/run-centos: cleanups and move to using read-dependencies
 - pkg build ci: Add make ci-deps-<distro> target to install pkgs
   [Chad Smith]
 - systemd: make cloud-final.service run before apt daily services.
   (LP: #1693361)
 - selinux: Allow restorecon to be non-fatal. [Ryan Harper] (LP: #1686751)
 - net: Allow netinfo subprocesses to return 0 or 1.
   [Ryan Harper] (LP: #1686751)
 - net: Allow for NetworkManager configuration [Ryan McCabe] (LP: #1693251)
 - Use distro release version to determine if we use systemd in redhat spec
   [Ryan Harper]
 - net: normalize data in network_state object
 - Integration Testing: tox env, pyxld 2.2.3, and revamp framework
   [Wesley Wiedenmeier]
 - Chef: Update omnibus url to chef.io, minor doc changes. [JJ Asghar]
 - tools: add centos scripts to build and test [Joshua Powers]
 - Drop cheetah python module as it is not needed by trunk [Ryan Harper]
 - rhel/centos spec cleanups.
 - cloud.cfg: move to a template.  setup.py changes along the way.
 - Makefile: add deb-src and srpm targets. use PYVER more places.
 - makefile: fix python 2/3 detection in the Makefile [Chad Smith]
 - snap: Removing snapcraft plug line [Joshua Powers] (LP: #1695333)
 - RHEL/CentOS: Fix default routes for IPv4/IPv6 configuration.
   [Andreas Karis] (LP: #1696176)
 - test: Fix pyflakes complaint of unused import.
   [Joshua Powers] (LP: #1695918)
 - NoCloud: support seed of nocloud from smbios information
   [Vladimir Pouzanov] (LP: #1691772)
 - net: when selecting a network device, use natural sort order
   [Marc-Aurèle Brothier]
 - fix typos and remove whitespace in various docs [Stephan Telling]
 - systemd: Fix typo in comment in cloud-init.target. [Chen-Han Hsiao]
 - Tests: Skip jsonschema related unit tests when dependency is absent.
   [Chad Smith] (LP: #1695318)
 - azure: remove accidental duplicate line in merge.
 - azure: identify platform by well known value in chassis asset tag.
   [Chad Smith] (LP: #1693939)
 - tools/net-convert.py: support old cloudinit versions by using kwargs.
 - ntp: Add schema definition and passive schema validation.
   [Chad Smith] (LP: #1692916)
 - Fix eni rendering for bridge params that require repeated key for
   values. [Ryan Harper]
 - net: remove systemd link file writing from eni renderer [Ryan Harper]
 - AliYun: Enable platform identification and enable by default.
   [Junjie Wang] (LP: #1638931)
 - net: fix reading and rendering addresses in cidr format.
   [Dimitri John Ledkov] (LP: #1689346, #1684349)
 - disk_setup: udev settle before attempting partitioning or fs creation.
   (LP: #1692093)
 - GCE: Update the attribute used to find instance SSH keys.
   [Daniel Watkins] (LP: #1693582)
 - nplan: For bonds, allow dashed or underscore names of keys.
   [Dimitri John Ledkov] (LP: #1690480)
 - python2.6: fix unit tests usage of assertNone and format.
 - test: update docstring on test_configured_list_with_none
 - fix tools/ds-identify to not write None twice.
 - tox/build: do not package depend on style requirements.
 - cc_ntp: Restructure cc_ntp unit tests. [Chad Smith] (LP: #1692794)
 - flake8: move the pinned version of flake8 up to 3.3.0
 - tests: Apply workaround for snapd bug in test case. [Joshua Powers]
 - RHEL/CentOS: Fix dual stack IPv4/IPv6 configuration.
   [Andreas Karis] (LP: #1679817, #1685534, #1685532)
 - disk_setup: fix several issues with gpt disk partitions. (LP: #1692087)
 - function spelling & docstring update [Joshua Powers]
 - Fixing wrong file name regression. [Joshua Powers]
 - tox: move pylint target to 1.7.1
 - Fix get_interfaces_by_mac for empty macs (LP: #1692028)
 - DigitalOcean: remove routes except for the public interface.
   [Ben Howard] (LP: #1681531.)
 - netplan: pass macaddress, when specified, for vlans
   [Dimitri John Ledkov] (LP: #1690388)
 - doc: various improvements for the docs on cc_users_groups.
   [Felix Dreissig]
 - cc_ntp: write template before installing and add service restart
   [Ryan Harper] (LP: #1645644)
 - cloudstack: fix tests to avoid accessing /var/lib/NetworkManager
   [Lars Kellogg-Stedman]
 - tests: fix hardcoded path to mkfs.ext4 [Joshua Powers] (LP: #1691517)
 - Actually skip warnings when .skip file is present.
   [Chris Brinker] (LP: #1691551)
 - netplan: fix netplan render_network_state signature.
   [Dimitri John Ledkov] (LP: #1685944)
 - Azure: fix reformatting of ephemeral disks on resize to large types.
   (LP: #1686514)
 - Revert "tools/net-convert: fix argument order for render_network_state"
 - make deb: Add devscripts dependency for make deb. Cleanup
   packages/bddeb. [Chad Smith] (LP: #1685935)
 - tools/net-convert: fix argument order for render_network_state
   [Ryan Harper] (LP: #1685944)
 - openstack: fix log message copy/paste typo in _get_url_settings
   [Lars Kellogg-Stedman]
 - unittests: fix unittests run on centos [Joshua Powers]
 - Improve detection of snappy to include os-release and kernel cmdline.
   (LP: #1689944)
 - Add address to config entry generated by _klibc_to_config_entry.
   [Julien Castets] (LP: #1691135)
 - sysconfig: Raise ValueError when multiple default gateways are present.
   [Chad Smith] (LP: #1687485)
 - FreeBSD: improvements and fixes for use on Azure
   [Hongjiang Zhang] (LP: #1636345)
 - Add unit tests for ds-identify, fix Ec2 bug found.
 - fs_setup: if cmd is specified, use shell interpretation.
   [Paul Meyer] (LP: #1687712)
 - doc: document network configuration defaults policy and formats.
   [Ryan Harper]
 - Fix name of "uri" key in docs for "cc_apt_configure" module
   [Felix Dreissig]
 - tests: Enable artful [Joshua Powers]
 - nova-lxd: read product_name from environment, not platform.
   (LP: #1685810)
 - Fix yum repo config where keys contain array values
   [Dylan Perry] (LP: #1592150)
 - template: Update debian backports template [Joshua Powers] (LP: #1627293)
 - rsyslog: replace ~ with stop [Joshua Powers] (LP: #1367899)
 - Doc: add additional RTD examples [Joshua Powers] (LP: #1459604)
 - Fix growpart for some cases when booted with root=PARTUUID.
   (LP: #1684869)
 - pylint: update output style to parseable [Joshua Powers]
 - pylint: fix all logging warnings [Joshua Powers]
 - CloudStack: Add NetworkManager to list of supported DHCP lease dirs.
   [Syed]
 - net: kernel lies about vlans not stealing mac addresses, when they do
   [Dimitri John Ledkov] (LP: #1682871)
 - ds-identify: Check correct path for "latest" config drive
   [Daniel Watkins] (LP: #1673637)
 - doc: Fix example for resolve.conf configuration.
   [Jon Grimm] (LP: #1531582)
 - Fix examples that reference upstream chef repository.
   [Jon Grimm] (LP: #1678145)
 - doc: correct grammar and improve clarity in merging documentation.
   [David Tagatac]
 - doc: Add missing doc link to snap-config module. [Ryan Harper]
 - snap: allows for creating cloud-init snap [Joshua Powers]
 - DigitalOcean: assign IPv4ll address to lowest indexed interface.
   [Ben Howard]
 - DigitalOcean: configure all NICs presented in meta-data. [Ben Howard]
 - Remove (and/or fix) URL shortener references [Jon Grimm] (LP: #1669727)
 - HACKING.rst: more info on filling out contributors agreement.
 - util: teach write_file about copy_mode option
   [Lars Kellogg-Stedman] (LP: #1644064)
 - DigitalOcean: bind resolvers to loopback interface. [Ben Howard]
 - tests: fix AltCloud tests to not rely on blkid (LP: #1636531)
 - OpenStack: add 'dvs' to the list of physical link types. (LP: #1674946)
 - Fix bug that resulted in an attempt to rename bonds or vlans.
   (LP: #1669860)
 - tests: update OpenNebula and Digital Ocean to not rely on host
   interfaces.
 - net: in netplan renderer delete known image-builtin content.
   (LP: #1675576)
 - doc: correct grammar in capabilities.rst [David Tagatac]
 - ds-identify: fix detecting of maas datasource. (LP: #1677710)
 - netplan: remove debugging prints, add debug logging [Ryan Harper]
 - ds-identify: do not write None twice to datasource_list.
 - support resizing partition and rootfs on system booted without
   initramfs. [Steve Langasek] (LP: #1677376)
 - apt_configure: run only when needed. (LP: #1675185)
 - OpenStack: identify OpenStack by product 'OpenStack Compute'.
   (LP: #1675349)
 - GCE: Search GCE in ds-identify, consider serial number in check.
   (LP: #1674861)
 - Add support for setting hashed passwords [Tore S. Lonoy] (LP: #1570325)
 - Fix filesystem creation when using "partition: auto"
   [Jonathan Ballet] (LP: #1634678)
 - ConfigDrive: support reading config drive data from /config-drive.
   (LP: #1673411)
 - ds-identify: fix detection of Bigstep datasource. (LP: #1674766)
 - test: add running of pylint [Joshua Powers]
 - ds-identify: fix bug where filename expansion was left on.
 - advertise network config v2 support (NETWORK_CONFIG_V2) in features.
 - Bigstep: fix bug when executing in python3. [root]
 - Fix unit test when running in a system deployed with cloud-init.
 - Bounce network interface for Azure when using the built-in path.
   [Brent Baude] (LP: #1674685)
 - cloudinit.net: add network config v2 parsing and rendering [Ryan Harper]
 - net: Fix incorrect call to isfile [Joshua Powers] (LP: #1674317)
 - net: add renderers for automatically selecting the renderer.
 - doc: fix config drive doc with regard to unpartitioned disks.
   (LP: #1673818)
 - test: Adding integratiron test for password as list [Joshua Powers]
 - render_network_state: switch arguments around, do not require target
 - support 'loopback' as a device type.
 - Integration Testing: improve testcase subclassing [Wesley Wiedenmeier]
 - gitignore: adding doc/rtd_html [Joshua Powers]
 - doc: add instructions for running integration tests via tox.
   [Joshua Powers]
 - test: avoid differences in 'date' output due to daylight savings.
 - Fix chef config module in omnibus install. [Jeremy Melvin] (LP: #1583837)
 - Add feature flags to cloudinit.version. [Wesley Wiedenmeier]
 - tox: add a citest environment
 - Further fix regression to support 'password' for default user.
 - fix regression when no chpasswd/list was provided.
 - Support chpasswd/list being a list in addition to a string.
   [Sergio Lystopad] (LP: #1665694)
 - doc: Fix configuration example for cc_set_passwords module.
   [Sergio Lystopad] (LP: #1665773)
 - net: support both ipv4 and ipv6 gateways in sysconfig.
   [Lars Kellogg-Stedman] (LP: #1669504)
 - net: do not raise exception for > 3 nameservers
   [Lars Kellogg-Stedman] (LP: #1670052)
 - ds-identify: report cleanups for config and exit value. (LP: #1669949)
 - ds-identify: move default setting for Ec2/strict_id to a global.
 - ds-identify: record not found in cloud.cfg and always add None.
 - Support warning if the used datasource is not in ds-identify's list.
 - tools/ds-identify: make report mode write namespaced results.
 - Move warning functionality to cloudinit/warnings.py
 - Add profile.d script for showing warnings on login.
 - Z99-cloud-locale-test.sh: install and make consistent.
 - tools/ds-identify: look at cloud.cfg when looking for ec2 strict_id.
 - tools/ds-identify: disable vmware_guest_customization by default.
 - tools/ds-identify: ovf identify vmware guest customization.
 - Identify Brightbox as an Ec2 datasource user. (LP: #1661693)
 - DatasourceEc2: add warning message when not on AWS.
 - ds-identify: add reading of datasource/Ec2/strict_id
 - tools/ds-identify: add support for found or maybe contributing config.
 - tools/ds-identify: read the seed directory on Ec2
 - tools/ds-identify: use quotes in local declarations.
 - tools/ds-identify: fix documentation of policy setting in a comment.
 - ds-identify: only run once per boot unless --force is given.
 - flake8: fix flake8 complaints in previous commit.
 - net: correct errors in cloudinit/net/sysconfig.py
   [Lars Kellogg-Stedman] (LP: #1665441)
 - ec2_utils: fix MetadataLeafDecoder that returned bytes on empty
 - apply the runtime configuration written by ds-identify.
 - ds-identify: fix checking for filesystem label (LP: #1663735)
 - ds-identify: read ds=nocloud properly (LP: #1663723)
 - support nova-lxd by reading platform from environment of pid 1.
   (LP: #1661797)
 - ds-identify: change aarch64 to use the default for non-dmi systems.
 - Remove style checking during build and add latest style checks to tox
   [Joshua Powers] (LP: #1652329)
 - code-style: make master pass pycodestyle (2.3.1) cleanly, currently:
   [Joshua Powers]
 - manual_cache_clean: When manually cleaning touch a file in instance dir.
 - Add tools/ds-identify to identify datasources available.
 - Fix small typo and change iso-filename for consistency [Robin Naundorf]
 - Fix eni rendering of multiple IPs per interface
   [Ryan Harper] (LP: #1657940)
 - tools/mock-meta: support python2 or python3 and ipv6 in both.
 - tests: remove executable bit on test_net, so it runs, and fix it.
 - tests: No longer monkey patch httpretty for python 3.4.2
 - Add 3 ecdsa-sha2-nistp* ssh key types now that they are standardized
   [Lars Kellogg-Stedman] (LP: #1658174)
 - reset httppretty for each test [Lars Kellogg-Stedman] (LP: #1658200)
 - build: fix running Make on a branch with tags other than master
 - EC2: Do not cache security credentials on disk
   [Andrew Jorgensen] (LP: #1638312)
 - doc: Fix typos and clarify some aspects of the part-handler
   [Erik M. Bray]
 - doc: add some documentation on OpenStack datasource.
 - OpenStack: Use timeout and retries from config in get_data.
   [Lars Kellogg-Stedman] (LP: #1657130)
 - Fixed Misc issues related to VMware customization. [Sankar Tanguturi]
 - Fix minor docs typo: perserve > preserve [Jeremy Bicha]
 - Use dnf instead of yum when available
   [Lars Kellogg-Stedman] (LP: #1647118)
 - validate-yaml: use python rather than explicitly python3
 - Get early logging logged, including failures of cmdline url.

0.7.9:
 - doc: adjust headers in tests documentation for consistency.
 - pep8: fix issue found in zesty build with pycodestyle.
 - integration test: initial commit of integration test framework
   [Wesley Wiedenmeier]
 - LICENSE: Allow dual licensing GPL-3 or Apache 2.0 [Jon Grimm]
 - Fix config order of precedence, putting kernel command line over system.
   [Wesley Wiedenmeier] (LP: #1582323)
 - pep8: whitespace fix
 - Update the list of valid ssh keys. [Michael Felt]
 - network: add ENI unit test for statically rendered routes.
 - set_hostname: avoid erroneously appending domain to fqdn
   [Lars Kellogg-Stedman] (LP: #1647910)
 - doc: change 'nobootwait' to 'nofail' in docs [Anhad Jai Singh]
 - Replace an expired bit.ly link in code comment.
 - user-groups: fix bug when groups was provided as string and had spaces
   (LP: #1354694)
 - mounts: use mount -a again to accomplish mounts (LP: #1647708)
 - CloudSigma: Fix bug where datasource was not loaded in local search.
   (LP: #1648380)
 - when adding a user, strip whitespace from group list [Lars Kellogg-Stedman]
   (LP: #1354694)
 - fix decoding of utf-8 chars in yaml test
 - Replace usage of sys_netdev_info with read_sys_net (LP: #1625766)
 - fix problems found in python2.6 test.
 - OpenStack: extend physical types to include hyperv, hw_veb, vhost_user.
   (LP: #1642679)
 - tests: fix assumptions that expected no eth0 in system. (LP: #1644043)
 - net/cmdline: Consider ip= or ip6= on command line not only ip=
   (LP: #1639930)
 - Just use file logging by default (LP: #1643990)
 - Improve formatting for ProcessExecutionError [Wesley Wiedenmeier]
 - flake8: fix trailing white space
 - Doc: various documentation fixes [Sean Bright]
 - cloudinit/config/cc_rh_subscription.py: Remove repos before adding
   [Brent Baude]
 - packages/redhat: fix rpm spec file.
 - main: set TZ in environment if not already set. [Ryan Harper]
 - Azure: No longer rely on walinux agent. (LP: #1538522)
 - disk_setup: Use sectors as unit when formatting MBR disks with sfdisk.
   [Daniel Watkins] (LP: #1460715)
 - Add activate_datasource, for datasource specific code paths. (LP: #1611074)
 - systemd: cloud-init-local use RequiresMountsFor=/var/lib/cloud
   (LP: #1642062)
 - systemd: cloud-init remove After=systemd-networkd-wait-online
 - systemd: cloud-init-local change Before basic to sysinit
 - pep8: fix style errors reported by pycodestyle 2.1.0
 - systemd: drop both Wants and After local-fs.target
 - systemd: networking service adjustments. (LP: #1636912)
 - systemd: replace Before=basic.target, dbus.target with sysinit.target
   (LP: #1629797)
 - doc: Add documentation on stages of boot.
 - doc: make the RST files consistently formated and other improvements.
 - Ec2: fix syntax and tox in previous commit.
 - Ec2: protect against non-dictionary in block-device-mapping.
 - doc: fixed example to not overwrite /etc/hosts [Chris Glass]
 - Doc: fix spelling / typos in ca_certs and scripts_vendor.
 - pyflakes: fix issue with pyflakes 1.3 found in ubuntu zesty-proposed.
 - net/cmdline: Further adjustments to ipv6 support [LaMont Jones]
   (LP: #1621615)
 - Add coverage dependency to bddeb to fix package build.
 - doc: improve HACKING.rst file
 - dmidecode: Allow dmidecode to be used on aarch64 [Robert Schweikert]
 - AliYun: Add new datasource for Ali-Cloud ECS [kaihuan.pkh]
 - Add coverage collection to tox unit tests. [Joshua Powers]
 - cc_users_groups: fix remaing call to ds.normalize_user_groups [Ryan Harper]
 - disk-config: udev settle after partitioning in gpt format. (LP: #1626243)
 - unittests: do not read system /etc/cloud/cloud.cfg.d (LP: #1635350)
 - Add documentation for logging features. [Wesley Wiedenmeier]
 - Add support for snap create-user on Ubuntu Core images. [Ryan Harper]
 - Fix sshd restarts for rhel distros. [Jim Gorz]
 - OpenNebula: replace 'ip' parsing with cloudinit.net usage.
 - Fix python2.6 things found running in centos 6.
 - Move user/group functions to new ug_util file
 - DigitalOcean: enable usage of data source by default.
 - update Gentoo initscripts to run in the correct order [Matthew Thode]
 - MAAS: improve the main of datasource to look at kernel cmdline config.
 - tests: silence the Cheetah UserWarning about NameMapper C version.
 - systemd: Run cloud-init.service Before dbus.socket not dbus.target
   [Daniel Watkins] (LP: #1629797)
 - systemd: run cloud-init.service Before dbus.service (LP: #1629797)
 - unittests: fix use of mock 2.0 'assert_called' when running make check
   [Ryan Harper]
 - Improve module documentation and doc cleanup. [Wesley Wiedenmeier]
 - lxd: Update network config for LXD 2.3 [Stéphane Graber]
 - DigitalOcean: use meta-data for network configruation [Ben Howard]
 - ntp: move to run after apt configuration (LP: #1628337)
 - Decode unicode types in decode_binary [Robert Schweikert]
 - systemd: Ensure that cloud-init-local happens before NetworkManager
 - Allow ephemeral drive to be unpartitioned [Paul Meyer]
 - subp: add 'update_env' argument
 - net: support reading ipv6 dhcp config from initramfs [LaMont Jones]
   (LP: #1621615, #1621507)
 - Adjust mounts and disk configuration for systemd. (LP: #1611074)
 - dmidecode: run dmidecode only on i?86 or x86_64 arch. [Robert Schweikert]
 - systemd: put cloud-init.target After multi-user.target (LP: #1623868)

0.7.8:
 - SmartOS: more improvements for network configuration
 - add ntp config module [Ryan Harper]
 - ChangeLog: update changelog for previous commit.
 - Add distro tags on config modules that should have it.
 - NoCloud: fix bug providing network-interfaces via meta-data. (LP: 1577982)
 - ConfigDrive: recognize 'tap' as a link type. (LP: #1610784)
 - Upgrade to a configobj package new enough to work
 - MAAS: add vendor-data support (LP: #1612313)
 - DigitalOcean: use the v1.json endpoint [Ben Howard]
 - Get Azure endpoint server from DHCP client [Brent Baude]
 - Apt: add new apt configuration format [Christian Ehrhardt]
 - distros: fix get_primary_arch method use of os.uname [Andrew Jorgensen]
 - Fix Gentoo net config generation [Matthew Thode]
 - Minor cleanups to atomic_helper and add unit tests.
 - azure dhclient-hook cleanups
 - network: fix get_interface_mac for bond slave, read_sys_net for ENOTDIR
 - Generate a dummy bond name for OpenStack (LP: #1605749)
 - add install option for openrc [Matthew Thode]
 - Add a module that can configure spacewalk.
 - python2.6: fix dict comprehension usage in _lsb_release.
 - apt-config: allow both old and new format to be present.
   [Christian Ehrhardt] (LP: #1616831)
 - bddeb: add --release flag to specify the release in changelog.
 - salt minion: update default pki directory for newer salt minion.
   (LP: #1609899)
 - Fix typo in default keys for phone_home [Roland Sommer] (LP: #1607810)
 - apt config conversion: treat empty string as not provided.  (LP: #1621180)
 - tests: cleanup tempdirs in apt_source tests
 - systemd: Better support package and upgrade. (LP: #1576692, #1621336)
 - remove obsolete .bzrignore
 - DataSourceOVF: fix user-data as base64 with python3 (LP: #1619394)
 - Allow link type of null in network_data.json [Jon Grimm] (LP: #1621968)

0.7.7:
 - open 0.7.7
 - Digital Ocean: add datasource for Digital Ocean. [Neal Shrader]
 - expose uses_systemd as a distro function (fix rhel7)
 - fix broken 'output' config (LP: #1387340)
 - begin adding cloud config module docs to config modules (LP: #1383510)
 - retain trailing eol from template files (sources.list) when
   rendered with jinja (LP: #1355343)
 - Only use datafiles and initsys addon outside virtualenvs
 - Fix the digital ocean test case on python 2.6
 - Increase the usefulness, robustness, configurability of the chef module
   so that it is more useful, more documented and better for users
 - Fix how '=' signs are not handled that well in ssh_utils (LP: #1391303)
 - Be more tolerant of ssh keys passed into 'ssh_authorized_keys'; allowing
   for list, tuple, set, dict, string types and warning on other unexpected
   types
 - Update to use newer/better OMNIBUS_URL for chef module
 - GCE: Allow base64 encoded user-data (LP: #1404311) [Wayne Witzell III]
 - GCE: use short hostname rather than fqdn (LP: #1383794) [Ben Howard]
 - systemd: make init stage run before login prompts shown [Steve Langasek]
 - hostname: on first boot apply hostname to be same as is written for
   persistent hostname.  (LP: #1246485)
 - remove usage of dmidecode on linux in favor of /sys interface [Ben Howard]
 - python3 support [Barry Warsaw, Daniel Watkins, Josh Harlow] (LP: #1247132)
 - support managing gpt partitions in disk config [Daniel Watkins]
 - Azure: utilze gpt support for ephemeral formating [Daniel Watkins]
 - CloudStack: support fetching password from virtual router [Daniel Watkins]
   (LP: #1422388)
 - readurl, read_file_or_url returns bytes, user must convert as necessary
 - SmartOS: use v2 metadata service (LP: #1436417) [Daniel Watkins]
 - NoCloud: fix local datasource claiming found without explicit dsmode
 - Snappy: add support for installing snappy packages and configuring.
 - systemd: use network-online instead of network.target (LP: #1440180)
   [Steve Langasek]
 - Add functionality to fixate the uid of a newly added user.
 - Don't overwrite the hostname if the user has changed it after we set it.
 - GCE datasource does not handle instance ssh keys (LP: 1403617)
 - sysvinit: make cloud-init-local run before network (LP: #1275098)
   [Surojit Pathak]
 - Azure: do not re-set hostname if user has changed it (LP: #1375252)
 - Fix exception when running with no arguments on Python 3. [Daniel Watkins]
 - Centos: detect/expect use of systemd on centos 7. [Brian Rak]
 - Azure: remove dependency on walinux-agent [Daniel Watkins]
 - EC2: know about eu-central-1 availability-zone (LP: #1456684)
 - Azure: remove password from on-disk ovf-env.xml (LP: #1443311) [Ben Howard]
 - Doc: include information on user-data in OpenStack [Daniel Watkins]
 - Systemd: check for systemd using sd_booted symantics (LP: #1461201)
   [Lars Kellogg-Stedman]
 - Add an rh_subscription module to handle registration of Red Hat instances.
   [Brent Baude]
 - cc_apt_configure: fix importing keys under python3 (LP: #1463373)
 - cc_growpart: fix specification of 'devices' list (LP: #1465436)
 - CloudStack: fix password setting on cloudstack > 4.5.1 (LP: #1464253)
 - GCE: fix determination of availability zone (LP: #1470880)
 - ssh: generate ed25519 host keys (LP: #1461242)
 - distro mirrors: provide datasource to mirror selection code to support
   GCE regional mirrors. (LP: #1470890)
 - add udev rules that identify ephemeral device on Azure (LP: #1411582)
 - _read_dmi_syspath: fix bad log message causing unintended exception
 - rsyslog: add additional configuration mode (LP: #1478103)
 - status_wrapper in main: fix use of print_exc when handling exception
 - reporting: add reporting module for web hook or logging of events.
 - NoCloud: fix consumption of vendordata (LP: #1493453)
 - power_state_change: support 'condition' to disable or enable poweroff
 - ubuntu fan: support for config and installing of ubuntu fan (LP: #1504604)
 - Azure: support extracting SSH key values from ovf-env.xml (LP: #1506244)
 - AltCloud: fix call to udevadm settle (LP: #1507526)
 - Ubuntu templates: modify sources.list template to provide same sources
   as install from server or desktop ISO. (LP: #1177432)
 - cc_mounts: use 'nofail' if system uses systemd. (LP: #1514485)
 - Azure: get instance id from dmi instead of SharedConfig (LP: #1506187)
 - systemd/power_state: fix power_state to work even if cloud-final
   exited non-zero (LP: #1449318)
 - SmartOS: Add support for Joyent LX-Brand Zones (LP: #1540965)
   [Robert C Jennings]
 - systemd: support using systemd-detect-virt to detect container
   (LP: #1539016) [Martin Pitt]
 - docs: fix lock_passwd documentation [Robert C Jennings]
 - Azure: Handle escaped quotes in WALinuxAgentShim.find_endpoint.
   (LP: #1488891) [Dan Watkins]
 - lxd: add support for setting up lxd using 'lxd init' (LP: #1522879)
 - Add Image Customization Parser for VMware vSphere Hypervisor
   Support. [Sankar Tanguturi]
 - timezone: use a symlink rather than copy for /etc/localtime
   unless it is already a file (LP: #1543025).
 - Enable password changing via a hashed string [Alex Sirbu]
 - Added BigStep datasource [Alex Sirbu]
 - No longer run pollinate in seed_random (LP: #1554152)
 - groups: add defalt user to 'lxd' group.  Create groups listed
   for a user if they do not exist. (LP: #1539317)
 - dmi data: fix failure of reading dmi data for unset dmi values
 - doc: mention label for nocloud datasource must be 'cidata' [Peter Hurley]
 - ssh_pwauth: fix module to support 'unchanged' and match behavior
   described in documentation [Chris Cosby]
 - quickly check to see if the previous instance id is still valid to
   avoid dependency on network metadata service on every boot (LP: #1553815)
 - support network configuration in cloud-init --local with support
   device naming via systemd.link.
 - FreeBSD: add support for installing packages, setting password and
   timezone.  Change default user to 'freebsd'. [Ben Arblaster]
 - locale: list unsupported environment settings in warning (LP: #1558069)
 - disk_setup: correctly send --force to mkfs on block devices (LP: #1548772)
 - chef: fix chef install from gems (LP: #1553345)
 - systemd: do not specify After of obsolete syslog.target (LP: #1536964)
 - centos: Ensure that resolve conf object is written as a str (LP: #1479988)
 - chef: straighten out validation_cert and validation_key (LP: #1568940)
 - phone_home: allow usage of fqdn (LP: #1566824) [Ollie Armstrong]
 - cloudstack: Only use DHCPv4 lease files as a datasource (LP: #1576273)
   [Wido den Hollander]
 - Paths: fix instance path if datasource's id has a '/'. (LP: #1575938)
   [Robert Jennings]
 - Ec2: do not retry requests for user-data path on 404.
 - settings on the kernel command line (cc:) override all local settings
   rather than only those in /etc/cloud/cloud.cfg (LP: #1582323)
 - Improve merging documentation [Daniel Watkins]
 - apt sources: support inserting key/key-id only, custom sources.list,
   long gpg key fingerprints with spaces, and dictionary format (LP: #1574113)
 - SmartOS: datasource improvements and support for metadata service
   providing networking information.
 - Datasources: centrally handle 'dsmode' and no longer require datasources
   to "pass" if modules_init should be executed with network access.
 - ConfigDrive: improved support for networking information from
   a network_data.json or older interfaces formated network_config.
 - Change missing Cheetah log warning to debug [Andrew Jorgensen]
 - Remove trailing dot from GCE metadata URL (LP: #1581200) [Phil Roche]
 - support network rendering to sysconfig (for centos and RHEL)
 - write_files: if no permissions are given, just use default without warn.
 - user_data: fix error when user-data is not utf-8 decodable (LP: #1532072)
 - fix mcollective module with python3 (LP: #1597699) [Sergii Golovatiuk] 

0.7.6:
 - open 0.7.6
 - Enable vendordata on CloudSigma datasource (LP: #1303986)
 - Poll on /dev/ttyS1 in CloudSigma datasource only if dmidecode says
   we're running on cloudsigma (LP: #1316475) [Kiril Vladimiroff]
 - SmartOS test: do not require existance of /dev/ttyS1. [LP: #1316597]
 - doc: fix user-groups doc to reference plural ssh-authorized-keys
   (LP: #1327065) [Joern Heissler]
 - fix 'make test' in python 2.6
 - support jinja2 as a templating engine.  Drop the hard requirement on
   cheetah.  This helps in python3 effort. (LP: #1219223)
 - change install path for systemd files to /lib/systemd/system
   [Dimitri John Ledkov]
 - change trunk debian packaging to use pybuild and drop cdbs.
   [Dimitri John Ledkov]
 - SeLinuxGuard: remove invalid check that looked for stat.st_mode in os.lstat.
 - do not write comments in /etc/timezone (LP: #1341710)
 - ubuntu: provide 'ubuntu-init-switch' module to aid in systemd testing.
 - status/result json: remove 'end' entry which was always null
 - systemd: make cloud-init block ssh service startup to guarantee keys
   are generated. [Jordan Evans] (LP: #1333920)
 - default settings: fix typo resulting in OpenStack and GCE not working
   unless config explicitly provided (LP: #1329583) [Garrett Holmstrom])
 - fix rendering resolv.conf if no 'options' are provided (LP: #1328953)
 - docs: fix disk-setup to reference 'table_type' [Rail Aliiev] (LP: #1313114)
 - ssh_authkey_fingerprints: fix bug that prevented disabling the module.
   (LP: #1340903) [Patrick Lucas]
 - no longer use pylint as a checker, fix pep8 [Jay Faulkner].
 - Openstack: do not load some urls twice.
 - FreeBsd: fix initscripts and add working config file [Harm Weites]
 - Datasource: fix broken logic to provide hostname if datasource does not
   provide one
 - Improved and less verbose logging.
 - resizefs: first check that device is writable.
 - configdrive: fix reading of vendor data to be like metadata service reader.
   [Jay Faulkner]
 - resizefs: fix broken background resizing [Jay Faulkner] (LP: #1338614)
 - cc_grub_dpkg: fix EC2 hvm instances to avoid prompt on grub update.
   (LP: #1336855)
 - FreeBsd: support config drive datasource [Joseph bajin]
 - cc_mounts: support creating a swap file
 - DigitalOcean & GCE: fix get_hostname consistency
0.7.5:
 - open 0.7.5
 - Add a debug log message around import failures
 - add a 'debug' module for easily printing out some information about
   datasource and cloud-init [Shraddha Pandhe]
 - support running apt with 'eatmydata' via configuration token
   apt_get_wrapper (LP: #1236531).
 - convert paths provided in config-drive 'files' to string before writing
   (LP: #1260072).
 - Azure: minor changes in logging output. ensure filenames are strings (not
   unicode).
 - config/cloud.cfg.d/05_logging.cfg: provide a default 'output' setting, to
   redirect cloud-init stderr and stdout /var/log/cloud-init-output.log.
 - drop support for resizing partitions with parted entirely (LP: #1212492).
   This was broken as it was anyway.
 - add support for vendordata in SmartOS and NoCloud datasources.
 - drop dependency on boto for crawling ec2 metadata service.
 - add 'Requires' on sudo (for OpenNebula datasource) in rpm specs, and
   'Recommends' in the debian/control.in [Vlastimil Holer]
 - if mount_info reports /dev/root is a device path for /, then convert
   that to a device via help of kernel cmdline.
 - configdrive: consider partitions as possible datasources if they have
   theh correct filesystem label. [Paul Querna]
 - initial freebsd support [Harm Weites]
 - fix in is_ipv4 to accept IP addresses with a '0' in them.
 - Azure: fix issue when stale data in /var/lib/waagent (LP: #1269626)
 - skip config_modules that declare themselves only verified on a set of
   distros.  Add them to 'unverified_modules' list to run anyway.
 - Add CloudSigma datasource [Kiril Vladimiroff]
 - Add initial support for Gentoo and Arch distributions [Nate House]
 - Add GCE datasource [Vaidas Jablonskis]
 - Add native Openstack datasource which reads openstack metadata
   rather than relying on EC2 data in openstack metadata service.
 - SmartOS, AltCloud: disable running on arm systems due to bug
   (LP: #1243287, #1285686) [Oleg Strikov]
 - Allow running a command to seed random, default is 'pollinate -q'
   (LP: #1286316) [Dustin Kirkland]
 - Write status to /run/cloud-init/status.json for consumption by
   other programs (LP: #1284439)
 - Azure: if a reboot causes ephemeral storage to be re-provisioned
   Then we need to re-format it. (LP: #1292648)
 - OpenNebula: support base64 encoded user-data
   [Enol Fernandez, Peter Kotcauer]
0.7.4:
 - fix issue mounting 'ephemeral0' if ephemeral0 was an alias for a
   partitioned block device with target filesystem on ephemeral0.1.
   (LP: #1236594)
 - fix DataSourceAzure incompatibility with 2.6 (LP: #1232175)
 - fix power_state_change config module so that example works.  Improve
   its documentation and add reference to 'timeout'
 - support apt-add-archive with 'cloud-archive:' format.  (LP: #1244355)
 - Change SmartOS verb for availability zone (LP: #1249124)
 - documentation fix for boothooks to use 'cloud-init-per'
 - fix resizefs module by supporting kernels that do not have
   /proc/PID/mountinfo.  (LP: #1248625) [Tim Daly Jr.]
 - fix 'make rpm' by removing 0.6.4 entry from ChangeLog (LP: #1241834)
0.7.3:
 - fix omnibus chef installer (LP: #1182265) [Chris Wing]
 - small fix for OVF datasource for iso transport on non-iso9660 filesystem
 - determine if upstart version is suitable for
   'initctl reload-configuration' (LP: #1124384).  If so, then invoke it.
   supports setting up instance-store disk with partition table and filesystem.
 - add Azure datasource.
 - add support for SuSE / SLES [Juerg Haefliger]
 - add a trailing carriage return to chpasswd input, which reportedly
   caused a problem on rhel5 if missing.
 - support individual MIME segments to be gzip compressed (LP: #1203203)
 - always finalize handlers even if processing failed (LP: #1203368)
 - support merging into cloud-config via jsonp. (LP: #1200476)
 - add datasource 'SmartOS' for Joyent Cloud.  Adds a dependency on serial.
 - add 'log_time' helper to util for timing how long things take
   which also reads from uptime. uptime is useful as clock may change during
   boot due to ntp.
 - prefer growpart resizer to 'parted resizepart' (LP: #1212492)
 - support random data seed from config drive or azure, and a module
   'seed_random' to read that and write it to /dev/urandom.
 - add OpenNebula Datasource [Vlastimil Holer]
 - add 'cc_disk_setup' config module for paritioning disks and creating
   filesystems.  Useful if attached disks are not formatted (LP: #1218506)
 - Fix usage of libselinux-python when selinux is disabled. [Garrett Holmstrom]
 - multi_log: only write to /dev/console if it exists [Garrett Holmstrom]
 - config/cloud.cfg: add 'sudo' to list groups for the default user 
   (LP: #1228228)
 - documentation fix for use of 'mkpasswd' [Eric Nordlund]
 - respect /etc/growroot-disabled file (LP: #1234331)
0.7.2:
 - add a debian watch file
 - add 'sudo' entry to ubuntu's default user (LP: #1080717)
 - fix resizefs module when 'noblock' was provided (LP: #1080985)
 - make sure there is no blank line before cloud-init entry in
   there are no blank lines in /etc/ca-certificates.conf (LP: #1077020)
 - fix sudoers writing when entry is a string (LP: #1079002)
 - tools/write-ssh-key-fingerprints: use '-s' rather than '--stderr'
   option (LP: #1083715)
 - make install of puppet configurable (LP: #1090205) [Craig Tracey]
 - support omnibus installer for chef [Anatoliy Dobrosynets]
 - fix bug where cloud-config in user-data could not modify system_info
   settings (LP: #1090482)
 - fix CloudStack DataSource to use Virtual Router as described by
   CloudStack documentation if it is available by searching through dhclient
   lease files.  If it is not available, then fall back to the default
   gateway. (LP: #1089989)
 - fix redaction of password field in log (LP: #1096417)
 - fix to cloud-config user setup.  Previously, lock_passwd was broken and
   all accounts would be locked unless 'system' was given (LP: #1096423).
 - Allow 'sr0' (or sr[0-9]) to be specified without /dev/ as a source for
   mounts. [Vlastimil Holer]
 - allow config-drive-data to come from a CD device by more correctly
   filtering out partitions.  (LP: #1100545)
 - setup docs to be available on read-the-docs
   https://cloudinit.readthedocs.org/en/latest/ (LP: #1093039)
 - add HACKING file for information on contributing
 - handle the legacy 'user:' configuration better, making it affect the
   configured OS default user (LP: #1100920)
 - Adding a resolv.conf configuration module (LP: #1100434).  Currently only
   working on redhat systems (no support for resolvconf)
 - support grouping linux distros into "os_families".  This allows a module
   to operate on the family (redhat or debian) rather than the distro (ubuntu,
   debian, fedora, rhel) (LP: #1100029)
 - fix /etc/hosts writing when templates are used (LP: #1100036)
 - add package versioning logic to package installation
   functionality (LP: #1108047)
 - fix documentation for write_files to correctly list 'permissions'
   rather than 'perms' (LP: #1111205)
 - cloud-init-container.conf: ensure /run/network before running ifquery
 - DataSourceNoCloud: allow user-data and meta-data to be specified
   in config (LP: #1115833).
 - improve debian support in sysvinit scripts, package build scripts, and
   split sources.list template to be distro specific.
 - support for resizing btrfs root filesystems [Blair Zajac]
 - fix issue when writing ssh keys to .ssh/authorized_keys (LP: #1136343)
 - upstart: cloud-init-nonet.conf trap the TERM signal, so that dmesg or other
   output does not get a 'killed by TERM signal' message.
 - support resizing partitions via growpart or parted (LP: #1136936)
 - allow specifying apt-get command in distro config ('apt_get_command')
 - support different and user-suppliable merging algorithms for cloud-config
   (LP: #1023179)
 - use python-requests rather than urllib2.  By using recent versions of
   python-requests, we get https support (LP: #1067888).
 - make apt-get invoke 'dist-upgrade' rather than 'upgrade' for
   package_upgrade. (LP: #1164147)
 - improvements for systemd with Fedora 18
 - workaround 2.6 kernel issue that stopped blkid from showing /dev/sr0
 - add new, backwards compatible merging syntax so merging of cloud-config
   can be more useful.

0.7.1:
 - sysvinit: fix missing dependency in cloud-init job for RHEL 5.6 
 - config-drive: map hostname to local-hostname (LP: #1061964)
 - landscape: install landscape-client package if not installed.
   only take action if cloud-config is present (LP: #1066115)
 - cc_landscape: restart landscape after install or config (LP: #1070345)
 - multipart/archive.  do not fail on unknown headers in multipart
   mime or cloud-archive config (LP: #1065116).
 - tools/Z99-cloud-locale-test.sh: avoid warning when user's shell is
   zsh (LP: #1073077)
 - fix stack trace when unknown user-data input had unicode (LP: #1075756)
 - split 'apt-update-upgrade' config module into 'apt-configure' and
   'package-update-upgrade-install'.  The 'package-update-upgrade-install'
   will be a cross distro module.
 - Cleanups:
   - Remove usage of paths.join, as all code should run through util helpers
   - Fix pylint complaining about tests folder 'helpers.py' not being found
   - Add a pylintrc file that is used instead options hidden in 'run_pylint'
 - fix bug where cloud-config from user-data could not affect system_info
   settings [revno 703] (LP: #1076811)
 - for write fqdn to system config for rh/fedora [revno 704]
 - add yaml/cloud config examples checking tool [revno 706]
 - Fix the merging of group configuration when that group configuration is a
   dict => members. [revno 707]
 - add yum_add_repo configuration module for adding additional yum repos
 - fix public key importing with config-drive-v2 datasource (LP: #1077700)
 - handle renaming and fixing up of marker names (LP: 1075980) [revno 710]
   this relieves that burden from the distro/packaging.
 - group config: fix how group members weren't being translated correctly
   when the group: [member, member...] format was used (LP: #1077245)
 - sysconfig: fix how the /etc/sysconfig/network should be using the fully
   qualified domain name instead of the partially qualified domain name
   which is used in the ubuntu/debian case (LP: #1076759)
 - fix how string escaping was not working when the string was a unicode
   string which was causing the warning message not to be written
   out (LP: #1075756)
 - for boto > 0.6.0 there was a lazy load of the metadata added, when
   cloud-init runs the usage of this lazy loading is hidden and since that lazy
   loading will be performed on future attribute access we must traverse the
   lazy loaded dictionary and force it to full expand so that if cloud-init
   blocks the ec2 metadata port the lazy loaded dictionary will continue
   working properly instead of trying to make additional url calls which will
   fail (LP: #1068801)
 - use a set of helper/parsing classes to perform system configuration
   for easier test.  (/etc/sysconfig, /etc/hostname, resolv.conf, /etc/hosts)
 - add power_state_change config module for shutting down stystem after
   cloud-init finishes. (LP: #1064665)
0.7.0:
 - add a 'exception_cb' argument to 'wait_for_url'.  If provided, this
   method will be called back with the exception received and the message.
 - utilize the 'exception_cb' above to modify the oauth timestamp in 
   DataSourceMAAS requests if a 401 or 403 is received. (LP: #978127)
 - catch signals and exit rather than stack tracing
 - if logging fails, enable a fallback logger by patching the logging module
 - do not 'start networking' in cloud-init-nonet, but add
   cloud-init-container job that runs only if in container and emits
   net-device-added (LP: #1031065)
 - search only top level dns for 'instance-data' in 
   DataSourceEc2 (LP: #1040200)
 - add support for config-drive-v2 (LP:#1037567)
 - support creating users, including the default user.
   [Ben Howard] (LP: #1028503)
 - add apt_reboot_if_required to reboot if an upgrade or package installation
   forced the need for one (LP: #1038108)
 - allow distro mirror selection to include availability-zone (LP: #1037727)
 - allow arch specific mirror selection (select ports.ubuntu.com on arm)
   LP: #1028501
 - allow specification of security mirrors (LP: #1006963)
 - add the 'None' datasource (LP: #906669), which will allow jobs
   to run even if there is no "real" datasource found.
 - write ssh authorized keys to console, ssh_authkey_fingerprints
   config module [Joshua Harlow] (LP: #1010582)
 - Added RHEVm and vSphere support as source AltCloud [Joseph VLcek]
 - add write-files module (LP: #1012854)
 - Add setuptools + cheetah to debian package build dependencies (LP: #1022101)
 - Adjust the sysvinit local script to provide 'cloud-init-local' and have
   the cloud-config script depend on that as well.
 - Add the 'bzr' name to all packages built
 - Reduce logging levels for certain non-critical cases to DEBUG instead of the
   previous level of WARNING
 - unified binary that activates the various stages
   - Now using argparse + subcommands to specify the various CLI options
 - a stage module that clearly separates the stages of the different
   components (also described how they are used and in what order in the
   new unified binary)
 - user_data is now a module that just does user data processing while the
   actual activation and 'handling' of the processed user data is done via
   a separate set of files (and modules) with the main 'init' stage being the
   controller of this
   - creation of boot_hook, cloud_config, shell_script, upstart_job version 2
     modules (with classes that perform there functionality) instead of those
     having functionality that is attached to the cloudinit object (which
     reduces reuse and limits future functionality, and makes testing harder)
 - removal of global config that defined paths, shared config, now this is
   via objects making unit testing testing and global side-effects a non issue
 - creation of a 'helpers.py' 
   - this contains an abstraction for the 'lock' like objects that the various 
     module/handler running stages use to avoid re-running a given 
     module/handler for a given frequency. this makes it separated from 
     the actual usage of that object (thus helpful for testing and clear lines
     usage and how the actual job is accomplished)
     - a common 'runner' class is the main entrypoint using these locks to
       run function objects passed in (along with there arguments) and there
       frequency
   - add in a 'paths' object that provides access to the previously global
     and/or config based paths (thus providing a single entrypoint object/type
     that provides path information)
       - this also adds in the ability to change the path when constructing 
       that path 'object' and adding in additional config that can be used to 
       alter the root paths of 'joins' (useful for testing or possibly useful
       in chroots?)
        - config options now avaiable that can alter the 'write_root' and the 
         'read_root' when backing code uses the paths join() function
   - add a config parser subclass that will automatically add unknown sections
     and return default values (instead of throwing exceptions for these cases)
   - a new config merging class that will be the central object that knows
     how to do the common configuration merging from the various configuration
     sources. The order is the following:
     - cli config files override environment config files
       which override instance configs which override datasource
       configs which override base configuration which overrides
       default configuration.
 - remove the passing around of the 'cloudinit' object as a 'cloud' variable
   and instead pass around an 'interface' object that can be given to modules
   and handlers as there cloud access layer while the backing of that
   object can be varied (good for abstraction and testing)
 - use a single set of functions to do importing of modules
 - add a function in which will search for a given set of module names with
   a given set of attributes and return those which are found
 - refactor logging so that instead of using a single top level 'log' that
   instead each component/module can use its own logger (if desired), this
   should be backwards compatible with handlers and config modules that used
   the passed in logger (its still passed in)
   - ensure that all places where exception are caught and where applicable
     that the util logexc() is called, so that no exceptions that may occur
     are dropped without first being logged (where it makes sense for this 
     to happen)
 - add a 'requires' file that lists cloud-init dependencies
   - applying it in package creation (bdeb and brpm) as well as using it
     in the modified setup.py to ensure dependencies are installed when
     using that method of packaging
 - add a 'version.py' that lists the active version (in code) so that code
   inside cloud-init can report the version in messaging and other config files
 - cleanup of subprocess usage so that all subprocess calls go through the
   subp() utility method, which now has an exception type that will provide
   detailed information on python 2.6 and 2.7
 - forced all code loading, moving, chmod, writing files and other system
   level actions to go through standard set of util functions, this greatly 
   helps in debugging and determining exactly which system actions cloud-init
   is performing
 - adjust url fetching and url trying to go through a single function that
   reads urls in the new 'url helper' file, this helps in tracing, debugging
   and knowing which urls are being called and/or posted to from with-in 
   cloud-init code
   - add in the sending of a 'User-Agent' header for all urls fetched that
     do not provide there own header mapping, derive this user-agent from
     the following template, 'Cloud-Init/{version}' where the version is the
     cloud-init version number
 - using prettytable for netinfo 'debug' printing since it provides a standard
   and defined output that should be easier to parse than a custom format
 - add a set of distro specific classes, that handle distro specific actions
   that modules and or handler code can use as needed, this is organized into
   a base abstract class with child classes that implement the shared 
   functionality. config determines exactly which subclass to load, so it can
   be easily extended as needed.
   - current functionality
      - network interface config file writing
      - hostname setting/updating
      - locale/timezone/ setting
      - updating of /etc/hosts (with templates or generically)
      - package commands (ie installing, removing)/mirror finding
      - interface up/down activating
   - implemented a debian + ubuntu subclass
   - implemented a redhat + fedora subclass
 - adjust the root 'cloud.cfg' file to now have distrobution/path specific 
   configuration values in it. these special configs are merged as the normal
   config is, but the system level config is not passed into modules/handlers
   - modules/handlers must go through the path and distro object instead
 - have the cloudstack datasource test the url before calling into boto to 
   avoid the long wait for boto to finish retrying and finally fail when
   the gateway meta-data address is unavailable
 - add a simple mock ec2 meta-data python based http server that can serve a
   very simple set of ec2 meta-data back to callers
      - useful for testing or for understanding what the ec2 meta-data 
        service can provide in terms of data or functionality
 - for ssh key and authorized key file parsing add in classes and util
   functions that maintain the state of individual lines, allowing for a
   clearer separation of parsing and modification (useful for testing and
   tracing)
 - add a set of 'base' init.d scripts that can be used on systems that do
   not have full upstart or systemd support (or support that does not match
   the standard fedora/ubuntu implementation)
   - currently these are being tested on RHEL 6.2
 - separate the datasources into there own subdirectory (instead of being
   a top-level item), this matches how config 'modules' and user-data
   'handlers' are also in there own subdirectory (thus helping new developers
   and others understand the code layout in a quicker manner)
 - add the building of rpms based off a new cli tool and template 'spec' file
   that will templatize and perform the necessary commands to create a source
   and binary package to be used with a cloud-init install on a 'rpm'
   supporting system
   - uses the new standard set of requires and converts those pypi requirements
     into a local set of package requirments (that are known to exist on RHEL
     systems but should also exist on fedora systems)
 - adjust the bdeb builder to be a python script (instead of a shell script)
   and make its 'control' file a template that takes in the standard set of
   pypi dependencies and uses a local mapping (known to work on ubuntu) to
   create the packages set of dependencies (that should also work on
   ubuntu-like systems)
 - pythonify a large set of various pieces of code
   - remove wrapping return statements with () when it has no effect
   - upper case all constants used
   - correctly 'case' class and method names (where applicable)
   - use os.path.join (and similar commands) instead of custom path creation
   - use 'is None' instead of the frowned upon '== None' which picks up a large
     set of 'true' cases than is typically desired (ie for objects that have
     there own equality)
   - use context managers on locks, tempdir, chdir, file, selinux, umask, 
     unmounting commands so that these actions do not have to be closed and/or
     cleaned up manually in finally blocks, which is typically not done and
     will eventually be a bug in the future
   - use the 'abc' module for abstract classes base where possible
      - applied in the datasource root class, the distro root class, and the
        user-data v2 root class
 - when loading yaml, check that the 'root' type matches a predefined set of
   valid types (typically just 'dict') and throw a type error if a mismatch
   occurs, this seems to be a good idea to do when loading user config files
 - when forking a long running task (ie resizing a filesytem) use a new util
   function that will fork and then call a callback, instead of having to
   implement all that code in a non-shared location (thus allowing it to be
   used by others in the future)
 - when writing out filenames, go through a util function that will attempt to
   ensure that the given filename is 'filesystem' safe by replacing '/' with
   '_' and removing characters which do not match a given whitelist of allowed
   filename characters
 - for the varying usages of the 'blkid' command make a function in the util
   module that can be used as the single point of entry for interaction with
   that command (and its results) instead of having X separate implementations
 - place the rfc 8222 time formatting and uptime repeated pieces of code in the
   util module as a set of function with the name 'time_rfc2822'/'uptime'
 - separate the pylint+pep8 calling from one tool into two indivudal tools so
   that they can be called independently, add make file sections that can be 
   used to call these independently
 - remove the support for the old style config that was previously located in
   '/etc/ec2-init/ec2-config.cfg', no longer supported!
 - instead of using a altered config parser that added its own 'dummy' section
   on in the 'mcollective' module, use configobj which handles the parsing of
   config without sections better (and it also maintains comments instead of
   removing them)
 - use the new defaulting config parser (that will not raise errors on sections
   that do not exist or return errors when values are fetched that do not
   exist) in the 'puppet' module
 - for config 'modules' add in the ability for the module to provide a list of 
   distro names which it is known to work with, if when ran and the distro
   being used name does not match one of those in this list, a warning will be
   written out saying that this module may not work correctly on this
   distrobution
 - for all dynamically imported modules ensure that they are fixed up before 
   they are used by ensuring that they have certain attributes, if they do not
   have those attributes they will be set to a sensible set of defaults instead
 - adjust all 'config' modules and handlers to use the adjusted util functions
   and the new distro objects where applicable so that those pieces of code can
   benefit from the unified and enhanced functionality being provided in that
   util module
 - fix a potential bug whereby when a #includeonce was encountered it would
   enable checking of urls against a cache, if later a #include was encountered
   it would continue checking against that cache, instead of refetching (which
   would likely be the expected case)
 - add a openstack/nova based pep8 extension utility ('hacking.py') that allows
   for custom checks (along with the standard pep8 checks) to occur when
   running 'make pep8' and its derivatives
 - support relative path in AuthorizedKeysFile (LP: #970071).
 - make apt-get update run with --quiet (suitable for logging) (LP: #1012613)
 - cc_salt_minion: use package 'salt-minion' rather than 'salt' (LP: #996166)
 - use yaml.safe_load rather than yaml.load (LP: #1015818)
0.6.3:
 - add sample systemd config files [Garrett Holmstrom]
 - add Fedora support [Garrent Holstrom] (LP: #883286)
 - fix bug in netinfo.debug_info if no net devices available (LP: #883367)
 - use python module hashlib rather than md5 to avoid deprecation warnings.
 - support configuration of mirror based on dns name ubuntu-mirror in
   local domain.
 - support setting of Acquire::HTTP::Proxy via 'apt_proxy'
 - DataSourceEc2: more resilliant to slow metadata service
   - config change: 'retries' dropped, 'max_wait' added, timeout increased
 - close stdin in all cloud-init programs that are launched at boot 
   (LP: #903993)
 - revert management of /etc/hosts to 0.6.1 style (LP: #890501, LP: #871966)
 - write full ssh keys to console for easy machine consumption (LP: #893400)
 - put INSTANCE_ID environment variable in bootcmd scripts
 - add 'cloud-init-per' script for easily running things with a given frequency
 - replace cloud-init-run-module with cloud-init-per
 - support configuration of landscape-client via cloud-config (LP: #857366)
 - part-handlers now get base64 decoded content rather than 2xbase64 encoded
   in the payload parameter. (LP: #874342)
 - add test case framework [Mike Milner] (LP: #890851)
 - fix pylint warnings [Juerg Haefliger] (LP: #914739)
 - add support for adding and deleting CA Certificates [Mike Milner] 
   (LP: #915232)
 - in ci-info lines, use '.' to indicate empty field for easier machine reading
 - support empty lines in "#include" files (LP: #923043)
 - support configuration of salt minions (Jeff Bauer) (LP: #927795)
 - DataSourceOVF: only search for OVF data on ISO9660 filesystems (LP: #898373)
 - DataSourceConfigDrive: support getting data from openstack config drive
   (LP: #857378)
 - DataSourceNoCloud: support seed from external disk of ISO or vfat
   (LP: #857378)
 - DataSourceNoCloud: support inserting /etc/network/interfaces
 - DataSourceMaaS: add data source for Ubuntu Machines as a Service (MaaS)
   (LP: #942061)
 - DataSourceCloudStack: add support for CloudStack datasource [Cosmin Luta]
 - add option 'apt_pipelining' to address issue with S3 mirrors 
   (LP: #948461) [Ben Howard]
 - warn on non-multipart, non-handled user-data [Martin Packman]
 - run resizefs in the background in order to not block boot (LP: #961226)
 - Fix bug in Chef support where validation_key was present in config, but
   'validation_cert' was not (LP: #960547)
 - Provide user friendly message when an invalid locale is set 
   [Ben Howard] (LP: #859814)
 - Support reading cloud-config from kernel command line parameter and
   populating local file with it, which can then provide data for DataSources
 - improve chef examples for working configurations on 11.10 and 12.04 
   [Lorin Hochstein] (LP: #960564)

0.6.2:
 - fix bug where update was not done unless update was explicitly set.
   It would not be run if 'upgrade' or packages were set to be installed
 - fix bug in part-handler code, that prevented working part-handlers
   (LP: #739694)
 - fix bug in resizefs cloud-config that would cause trace based on
   failure of 'blkid /dev/root' (LP: #726938)
 - convert dos formated files to unix for user-scripts, boothooks,
   and upstart jobs (LP: #744965)
 - fix bug in seeding of grub dpkg configuration (LP: #752361) due
   to renamed devices in newer (natty) kernels (/dev/sda1 -> /dev/xvda1)
 - make metadata urls configurable, to support eucalyptus in
   STATIC or SYSTEM modes (LP: #761847)
 - support disabling byobu in cloud-config
 - run cc_ssh as a cloud-init module so it is guaranteed to run before
   ssh starts (LP: #781101)
 - make prefix for keys added to /root/.ssh/authorized_keys configurable
   and add 'no-port-forwarding,no-agent-forwarding,no-X11-forwarding'
   to the default (LP: #798505)
 - make 'cloud-config ready' command configurable (LP: #785551)
 - make fstab fields used to 'fill in' shorthand entries configurable
   This means you do not have to have 'nobootwait' in the values
   (LP: #785542)
 - read /etc/ssh/sshd_config for AuthorizedKeysFile rather than
   assuming ~/.ssh/authorized_keys (LP: #731849)
 - fix cloud-init in ubuntu lxc containers (LP: #800824)
 - sanitize hosts file for system's hostname to 127.0.1.1 (LP: #802637)
 - add chef support (cloudinit/CloudConfig/cc_chef.py) (LP: ##798844)
 - do not give trace on failure to resize in lxc container (LP: #800856)
 - increase the timeout on url gets for "seedfrom" values (LP: #812646)
 - do not write entries for ephemeral0 on t1.micro (LP: #744019)
 - support 'include-once' so that expiring or one-time use urls can
   be used for '#include' to provide sensitive data.
 - support for passing public and private keys to mcollective via cloud-config
 - support multiple staticly configured network devices, as long as
   all of them come up early (LP: #810044)
 - Changes to handling user data mean that:
   * boothooks will now run more than once as they were intended (and as
     bootcmd commands do)
   * cloud-config and user-scripts will be updated from user data every boot
 - Fix issue where 'isatty' would return true for apt-add-repository.
   apt-add-repository would get stdin which was attached to a terminal
   (/dev/console) and would thus hang when running during boot.  (LP: 831505)
   This was done by changing all users of util.subp to have None input unless
   specified
 - Add some debug info to the console when cloud-init runs.
   This is useful if debugging, IP and route information is printed to the 
   console.
 - change the mechanism for handling .ssh/authorized_keys, to update entries
   rather than appending.  This ensures that the authorized_keys that are
   being inserted actually do something (LP: #434076, LP: #833499)
 - log warning on failure to set hostname (LP: #832175)
 - upstart/cloud-init-nonet.conf: wait for all network interfaces to be up
   allow for the possibility of /var/run != /run.
 - DataSourceNoCloud, DataSourceOVF : do not provide a default hostname.
   This way the configured hostname of the system will be used if not provided
   by metadata (LP: #838280)
 - DataSourceOVF: change the default instance id to 'iid-dsovf' from 'nocloud'
 - Improve the OVF documentation, and provide a simple command line
   tool for creating a useful ISO file.

0.6.1:
 - fix bug in fixing permission on /var/log/cloud-init.log (LP: #704509)
 - improve comment strings in rsyslog file tools/21-cloudinit.conf
 - add previous-instance-id and previous-datasource files to datadir
 - add 'datasource' file to instance dir
 - add setting of passwords and enabling/disabling of PasswordAuthentication
   for sshd.  By default no changes are done to sshd.
 - fix for puppet configuration options (LP: #709946) [Ryan Lane]
 - fix pickling of DataSource, which broke seeding.
 - turn resize_rootfs default to True
 - avoid mounts in DataSourceOVF if 'read' on device fails
   'mount /dev/sr0' for an empty virtual cdrom device was taking 18 seconds
 - add 'manual_cache_clean' option to select manual cleaning of
   the /var/lib/cloud/instance/ link, for a data source that might
   not be present on every boot
 - make DataSourceEc2 retries and timeout configurable
 - add helper routines for apt-get update and install
 - add 'bootcmd' like 'runcmd' to cloud-config syntax for running things early
 - move from '#opt_include' in config file format to conf_d.
   ie, now files in /etc/cloud.cfg.d/ is read rather than reading
   '#opt_include <filename>' or '#include <filename>' in cloud.cfg
 - allow /etc/hosts to be written from hosts.tmpl. which allows
   getting local-hostname into /etc/hosts (LP: #720440)
 - better handle startup if there is no eth0 (LP: #714807)
 - update rather than append in puppet config [Marc Cluet]
 - add cloud-config for mcollective [Marc Cluet]
0.6.0:
 - change permissions of /var/log/cloud-init.log to accomodate
   syslog writing to it (LP: #704509)
 - rework of /var/lib/cloud layout
 - remove updates-check (LP: #653220)
 - support resizing / on first boot (enabled by default)
 - added support for running CloudConfig modules at cloud-init time
   rather than cloud-config time, and the new 'cloud_init_modules'
   entry in cloud.cfg to indicate which should run then.
   The driving force behind this was to have the rsyslog module
   able to run before rsyslog even runs so that a restart would
   not be needed (rsyslog on ubuntu runs on 'filesystem')
 - moved setting and updating of hostname to cloud_init_modules
   this allows the user to easily disable these from running.
   This also means:
   - the semaphore name for 'set_hostname' and 'update_hostname'
     changes to 'config_set_hostname' and 'config_update_hostname'
 - added cloud-config option 'hostname' for setting hostname
 - moved upstart/cloud-run-user-script.conf to upstart/cloud-final.conf
 - cloud-final.conf now runs runs cloud-config modules similar
   to cloud-config and cloud-init.
 - LP: #653271 
   - added writing of "boot-finished" to /var/lib/cloud/instance/boot-finished
     this is the last thing done, indicating cloud-init is finished booting
   - writes message to console with timestamp and uptime
 - write ssh keys to console as one of the last things done
   this is to ensure they don't get run off the 'get-console-ouptut' buffer
 - user_scripts run via cloud-final and thus semaphore renamed from
   user_scripts to config_user_scripts
 - add support for redirecting output of cloud-init, cloud-config, cloud-final
   via the config file, or user data config file
 - add support for posting data about the instance to a url (phone_home)
 - add minimal OVF transport (iso) support
 - make DataSources that are attempted dynamic and configurable from
   system config. changen "cloud_type: auto" as configuration for this
   to 'datasource_list: [ "Ec2" ]'.  Each of the items in that list
   must be modules that can be loaded by "DataSource<item>"
 - add 'timezone' option to cloud-config (LP: #645458)
 - Added an additional archive format, that can be used for multi-part
   input to cloud-init.  This may be more user friendly then mime-multipart
   See example in doc/examples/cloud-config-archive.txt (LP: #641504)
 - add support for reading Rightscale style user data (LP: #668400)
   and acting on it in cloud-config (cc_rightscale_userdata.py)
 - make the message on 'disable_root' more clear (LP: #672417)
 - do not require public key if private is given in ssh cloud-config 
   (LP: #648905)
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