Merge ~powersj/cloud-init:docs/availability into cloud-init:master

[Joshua Powers]

docs: more complete list of availability

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:95714fee571e5633ce5556c1c7daf39f25afaeba
https://jenkins.ubuntu.com/server/job/cloud-init-ci/1126/
Executed test runs:
    SUCCESS: Checkout
    SUCCESS: Unit & Style Tests
    SUCCESS: Ubuntu LTS: Build
    SUCCESS: Ubuntu LTS: Integration
    IN_PROGRESS: Declarative: Post Actions

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/cloud-init-ci/1126//rebuild

review: Approve (continuous-integration)

[Chad Smith (chad.smith)]

Other additional clouds of interest, then Approved.

review: Needs Fixing

b8a9920... by Joshua Powers on 2019-09-14

Add missing clouds

[Joshua Powers (powersj)]

I added requested clouds, so self approving :D

review: Approve

diff --git a/doc/rtd/topics/availability.rst b/doc/rtd/topics/availability.rst
index ef5ae7b..3f215b1 100644
--- a/doc/rtd/topics/availability.rst
+++ b/doc/rtd/topics/availability.rst
@@ -1,21 +1,64 @@
-************
+.. _availability:
+
 Availability
 ************
 
-It is currently installed in the `Ubuntu Cloud Images`_ and also in the official `Ubuntu`_ images available on EC2, Azure, GCE and many other clouds.
+Below outlines the current availability of cloud-init across
+distributions and clouds, both public and private.
+
+.. note::
+
+    If a distribution or cloud does not show up in the list below contact
+    them and ask for images to be generated using cloud-init!
 
-Versions for other systems can be (or have been) created for the following distributions:
+Distributions
+=============
+
+Cloud-init has support across all major Linux distributions and
+FreeBSD:
 
 - Ubuntu
+- SLES/openSUSE
+- RHEL/CentOS
 - Fedora
+- Gentoo Linux
 - Debian
-- RHEL
-- CentOS
-- *and more...*
+- ArchLinux
+- FreeBSD
+
+Clouds
+======
+
+Cloud-init provides support across a wide ranging list of execution
+environments in the public cloud:
+
+- Amazon Web Services
+- Microsoft Azure
+- Google Cloud Platform
+- Oracle Cloud Infrastructure
+- Softlayer
+- Rackspace Public Cloud
+- IBM Cloud
+- Digital Ocean
+- Bigstep
+- Hetzner
+- Joyent
+- CloudSigma
+- Alibaba Cloud
+- OVH
+- OpenNebula
+- Exoscale
+- Scaleway
+- CloudStack
+- AltCloud
+- SmartOS
 
-So ask your distribution provider where you can obtain an image with it built-in if one is not already available ☺
+Additionally, cloud-init is supported on these private clouds:
 
+- Bare metal installs
+- OpenStack
+- LXD
+- KVM
+- Metal-as-a-Service (MAAS)
 
-.. _Ubuntu Cloud Images: http://cloud-images.ubuntu.com/
-.. _Ubuntu: http://www.ubuntu.com/
-.. vi: textwidth=78
+.. vi: textwidth=79