Restructure the Ubuntu Getting Started Section.

- This supercedes PR #1770
 - This breaks up the section from one huge installation page into:
   - A new index page.
   - New support grid with commercial and community support options.
   - Move to lifecycle-based pages based on operational tasks.
     - Add support for local deployments via LXD.
       - Added screenshots to images/docs/ubuntu
     - Add backup page.
     - Add decommissioning page.
     - Add a glossary of terms page.
     - Rewritten installation page.
     - Add logging page.
     - Add monitoring page.
     - Add networking page, flannel only for now, calico in progress.
     - Add a scaling page.
     - Add a security page.
     - Add a storage page.
     - Add a troubleshooting page.
     - Add an upgrade page.
     - Add a cluster validation page.
     - Add new ubuntu content to the index page.
       - Add Ubuntu to _data TOC.
     - Add warning about choosing ipv6 with LXD, thanks Ed Baluf.
     - Template-ize all the pages per jaredb's review.

docs/getting-started-guides/ubuntu/index.md

@@ -0,0 +1,53 @@
+---
+Title: Kubernetes on Ubuntu
+---
+
+{% capture overview %}
+There are multiple ways to run a Kubernetes cluster with Ubuntu. These pages explain how to deploy Kubernetes on Ubuntu on multiple public and private clouds, as well as bare metal. 
+{% endcapture %}
+
+{% capture body %}
+## Official Ubuntu Guides
+
+- [The Canonical Distribution of Kubernetes](/docs/getting-started-guides/ubuntu)
+
+Supports AWS, GCE, Azure, Joyent, OpenStack, Bare Metal and local workstation deployment.
+
+### Operational Guides  
+
+  - [Installation](/docs/getting-started-guides/ubuntu/installation)
+  - [Validation](/docs/getting-started-guides/ubuntu/validation)
+  - [Backups](/docs/getting-started-guides/ubuntu/backups)
+  - [Upgrades](/docs/getting-started-guides/ubuntu/upgrades)
+  - [Scaling](/docs/getting-started-guides/ubuntu/scaling)
+  - [Logging](/docs/getting-started-guides/ubuntu/logging)
+  - [Monitoring](/docs/getting-started-guides/ubuntu/monitoring)
+  - [Networking](/docs/getting-started-guides/ubuntu/networking)
+  - [Security](/docs/getting-started-guides/ubuntu/security)
+  - [Storage](/docs/getting-started-guides/ubuntu/storage)
+  - [Troubleshooting](/docs/getting-started-guides/ubuntu/troubleshooting)
+  - [Decommissioning](/docs/getting-started-guides/ubuntu/decommissioning)
+  - [Glossary](/docs/getting-started-guides/ubuntu/glossary)
+
+## Developer Guides
+
+  - [Local development using LXD](/docs/getting-started-guides/ubuntu/local)
+
+## Community Ubuntu Guides
+
+- [Manual Installation](/docs/getting-started-guides/ubuntu/manual)
+- [Calico Configuration](/docs/getting-started-guides/ubuntu/calico)
+
+Please feel free to submit guides to this section. 
+
+## Where to find us
+
+We're normally following the following Slack channels: 
+
+- [sig-cluster-lifecycle](https://kubernetes.slack.com/messages/sig-cluster-lifecycle/)
+- [sig-cluster-ops](https://kubernetes.slack.com/messages/sig-cluster-ops/)
+
+and we monitor the Kubernetes mailing lists. 
+{% endcapture %}
+
+{% include templates/concept.md %}