This is a port of #5392. It also takes care of the small chore to update the default k8s
version to 1.16, which is the latest supported version
Signed-off-by: Taylor Thomas <taylor.thomas@microsoft.com>
This adds the {{.Capabilities}} object to the template variables so that
chart authors can write charts that are aware of teh Kubernetes
capabilities of the current cluster.
Closes#1608