Disable liveness for dns due to #10659

Use latest heapster image

Fix "Docker Containers should be able to override the image's default command" tests

update kubectl output in examples/glusterfs

Make examples links be relative

Fix broken links in docs/README

Update GCE docs to reflect namespaces

update the output of kubectl get in examples/hazelcast

Replace REASON with STATUS in examples

Fixed link in persistent-volumes.md

update kubectl output in examples/elasticsearch

V0.21.0 merge to master

Add documentation for HA Kubernetes

This reverts commit aa9d423e.

Increase zero-limit pod RAM for spreading to 200 MB to match cluster

Change build/mark-new-version.sh to always create a backmerge branch

addon pods and represent less trivial fraction of typical machine RAM
(e.g. n1-standard-1).

Update UI redirect to kube-system.

AWS: Some images require volume mounts on /dev/xvdX