improve network configuration

This branch accomplishes several things:
 - centrally handle 'dsmode' to be 'local' or 'net.
   This allows local data sources to run before networking
   but still have user-data read by default when networking is available.

 - support networking information being read on dreamcompute
   dreamcompute's openstack declares networking via the
   /etc/network/interfaces style 'network_config' format.
 
 - support reading and applying networking information on SmartOS

 - improve reading networking from openstack network_data.json (LP: #1577982)
   add support for mtu and routes and many miscellaneous fixes.

 - support for renaming devices in a container (LP: #1579130).
   Also rename network devices as instructed by the host on
   every boot where cloud-init networking is enabled.  This is required
   because a.) containers do not get systemd.link files applied
   as they do not have udev. b.) if the initramfs is out of date
   then we need to apply them.

 - remove blocking of udev rules (LP: #1577844, LP: #1571761)

LP: #1577982, #1579130, #1577844, #1571761

1 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index e0f41487..aa3315b8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -115,6 +115,12 @@
  - 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.
 
 0.7.6:
  - open 0.7.6