Add/expand docs on namespaces.

examples/hazelcast - pass namespace via env, reduce cpu requirements and inc image version

Add another php library

Add some additional text about getting help.

Move user docs to docs/user-guide/

Update vagrant guide VirtualBox version

Add --root-ca-key code to Mesos controller-manager fork

Add a better help message for kubectl describe

Ansible enhancements for CentOS 

Fix default service node port range in e2e test

When resource type isn't given in the command, print the possible
resource types. Also added the resource type description in help
strings.

Add remaining sections to the "pods in production" part of the user guide

Update etcd and add a warning about Docker 1.7.0

   * Update etcd and add a warning about Docker 1.7.0
   * Update kubernetes to 0.21.2, Flannel to 0.5.0
   * Remove --sync-nodes which is removed.

Move admin related docs into docs/admin

Fixed Hazelcast example.

Munger

* Add analytics munger w/ munge heading
* More link autofixes
* Allow running a subset of munges
* Fix repo root detection
* Only process non-preformatted blocks
* Gendocs no longer adds the analytics link; mungedocs does that in a
  second pass.

Don't use a shell array where not needed

Add a doc on debugging services

Improve table of contents generation.

Conformance test update

E2E tests for kubectl logs and patch

Fix table in getting-started-guides README.md

Update single node docker guide to v0.21.2