Improve module documentation and doc cleanup.

This adds lots of config module documentation in a standard format.
It will greatly improve the content at readthedocs.
Additionally:
 * Add a 'doc' env to tox.ini
 * Changed default highlight language for sphinx conf from python to yaml
   most examples in documentation are yaml configs
 * Updated datasource examples to highlight sh code properly

1 files changed, 6 insertions, 291 deletions

diff --git a/doc/rtd/topics/modules.rst b/doc/rtd/topics/modules.rst
index 4202338b..57892f2d 100644
--- a/doc/rtd/topics/modules.rst
+++ b/doc/rtd/topics/modules.rst
@@ -1,342 +1,57 @@
 =======
 Modules
 =======
-
-Apt Configure
--------------
-
-**Internal name:** ``cc_apt_configure``
-
 .. automodule:: cloudinit.config.cc_apt_configure
-
-Apt Pipelining
---------------
-
-**Internal name:** ``cc_apt_pipelining``
-
 .. automodule:: cloudinit.config.cc_apt_pipelining
-
-Bootcmd
--------
-
-**Internal name:** ``cc_bootcmd``
-
 .. automodule:: cloudinit.config.cc_bootcmd
-
-Byobu
------
-
-**Internal name:** ``cc_byobu``
-
 .. automodule:: cloudinit.config.cc_byobu
-
-Ca Certs
---------
-
-**Internal name:** ``cc_ca_certs``
-
 .. automodule:: cloudinit.config.cc_ca_certs
-
-Chef
-----
-
-**Internal name:** ``cc_chef``
-
 .. automodule:: cloudinit.config.cc_chef
-    :members:
-
-Debug
------
-
-**Internal name:** ``cc_debug``
-
 .. automodule:: cloudinit.config.cc_debug
-    :members:
-
-Disable Ec2 Metadata
---------------------
-
-**Internal name:** ``cc_disable_ec2_metadata``
-
 .. automodule:: cloudinit.config.cc_disable_ec2_metadata
-
-Disk Setup
-----------
-
-**Internal name:** ``cc_disk_setup``
-
 .. automodule:: cloudinit.config.cc_disk_setup
-
-Emit Upstart
-------------
-
-**Internal name:** ``cc_emit_upstart``
-
 .. automodule:: cloudinit.config.cc_emit_upstart
-
-Final Message
--------------
-
-**Internal name:** ``cc_final_message``
-
+.. automodule:: cloudinit.config.cc_fan
 .. automodule:: cloudinit.config.cc_final_message
-
-Foo
----
-
-**Internal name:** ``cc_foo``
-
 .. automodule:: cloudinit.config.cc_foo
-
-Growpart
---------
-
-**Internal name:** ``cc_growpart``
-
 .. automodule:: cloudinit.config.cc_growpart
-
-Grub Dpkg
----------
-
-**Internal name:** ``cc_grub_dpkg``
-
 .. automodule:: cloudinit.config.cc_grub_dpkg
-
-Keys To Console
----------------
-
-**Internal name:** ``cc_keys_to_console``
-
 .. automodule:: cloudinit.config.cc_keys_to_console
-
-Landscape
----------
-
-**Internal name:** ``cc_landscape``
-
 .. automodule:: cloudinit.config.cc_landscape
-
-Locale
-------
-
-**Internal name:** ``cc_locale``
-
 .. automodule:: cloudinit.config.cc_locale
-
-Mcollective
------------
-
-**Internal name:** ``cc_mcollective``
-
+.. automodule:: cloudinit.config.cc_lxd
 .. automodule:: cloudinit.config.cc_mcollective
-
-Migrator
---------
-
-**Internal name:** ``cc_migrator``
-
 .. automodule:: cloudinit.config.cc_migrator
-
-Mounts
-------
-
-**Internal name:** ``cc_mounts``
-
 .. automodule:: cloudinit.config.cc_mounts
-
-Package Update Upgrade Install
-------------------------------
-
-**Internal name:** ``cc_package_update_upgrade_install``
-
+.. automodule:: cloudinit.config.cc_ntp
 .. automodule:: cloudinit.config.cc_package_update_upgrade_install
-
-Phone Home
-----------
-
-**Internal name:** ``cc_phone_home``
-
 .. automodule:: cloudinit.config.cc_phone_home
-
-Power State Change
-------------------
-
-**Internal name:** ``cc_power_state_change``
-
 .. automodule:: cloudinit.config.cc_power_state_change
-
-Puppet
-------
-
-**Internal name:** ``cc_puppet``
-
 .. automodule:: cloudinit.config.cc_puppet
-
-Resizefs
---------
-
-**Internal name:** ``cc_resizefs``
-
 .. automodule:: cloudinit.config.cc_resizefs
-
-Resolv Conf
------------
-
-**Internal name:** ``cc_resolv_conf``
-
 .. automodule:: cloudinit.config.cc_resolv_conf
-
-Rightscale Userdata
--------------------
-
-**Internal name:** ``cc_rightscale_userdata``
-
+.. automodule:: cloudinit.config.cc_rh_subscription
 .. automodule:: cloudinit.config.cc_rightscale_userdata
-
-Rsyslog
--------
-
-**Internal name:** ``cc_rsyslog``
-
 .. automodule:: cloudinit.config.cc_rsyslog
-
-Runcmd
-------
-
-**Internal name:** ``cc_runcmd``
-
 .. automodule:: cloudinit.config.cc_runcmd
-
-Salt Minion
------------
-
-**Internal name:** ``cc_salt_minion``
-
 .. automodule:: cloudinit.config.cc_salt_minion
-
-Scripts Per Boot
-----------------
-
-**Internal name:** ``cc_scripts_per_boot``
-
 .. automodule:: cloudinit.config.cc_scripts_per_boot
-
-Scripts Per Instance
---------------------
-
-**Internal name:** ``cc_scripts_per_instance``
-
 .. automodule:: cloudinit.config.cc_scripts_per_instance
-
-Scripts Per Once
-----------------
-
-**Internal name:** ``cc_scripts_per_once``
-
 .. automodule:: cloudinit.config.cc_scripts_per_once
-
-Scripts User
-------------
-
-**Internal name:** ``cc_scripts_user``
-
 .. automodule:: cloudinit.config.cc_scripts_user
-
-Scripts Vendor
---------------
-
-**Internal name:** ``cc_scripts_vendor``
-
 .. automodule:: cloudinit.config.cc_scripts_vendor
-
-Seed Random
------------
-
-**Internal name:** ``cc_seed_random``
-
 .. automodule:: cloudinit.config.cc_seed_random
-
-Set Hostname
-------------
-
-**Internal name:** ``cc_set_hostname``
-
 .. automodule:: cloudinit.config.cc_set_hostname
-
-Set Passwords
--------------
-
-**Internal name:** ``cc_set_passwords``
-
 .. automodule:: cloudinit.config.cc_set_passwords
-
-Ssh
----
-
-**Internal name:** ``cc_ssh``
-
+.. automodule:: cloudinit.config.cc_snappy
+.. automodule:: cloudinit.config.cc_spacewalk
 .. automodule:: cloudinit.config.cc_ssh
-
-Ssh Authkey Fingerprints
-------------------------
-
-**Internal name:** ``cc_ssh_authkey_fingerprints``
-
 .. automodule:: cloudinit.config.cc_ssh_authkey_fingerprints
-
-Ssh Import Id
--------------
-
-**Internal name:** ``cc_ssh_import_id``
-
 .. automodule:: cloudinit.config.cc_ssh_import_id
-
-Timezone
---------
-
-**Internal name:** ``cc_timezone``
-
 .. automodule:: cloudinit.config.cc_timezone
-
-Ubuntu Init Switch
-------------------
-
-**Internal name:** ``cc_ubuntu_init_switch``
-
 .. automodule:: cloudinit.config.cc_ubuntu_init_switch
-    :members:
-
-Update Etc Hosts
-----------------
-
-**Internal name:** ``cc_update_etc_hosts``
-
 .. automodule:: cloudinit.config.cc_update_etc_hosts
-
-Update Hostname
----------------
-
-**Internal name:** ``cc_update_hostname``
-
 .. automodule:: cloudinit.config.cc_update_hostname
-
-Users Groups
-------------
-
-**Internal name:** ``cc_users_groups``
-
 .. automodule:: cloudinit.config.cc_users_groups
-
-Write Files
------------
-
-**Internal name:** ``cc_write_files``
-
 .. automodule:: cloudinit.config.cc_write_files
-
-Yum Add Repo
-------------
-
-**Internal name:** ``cc_yum_add_repo``
-
 .. automodule:: cloudinit.config.cc_yum_add_repo