This patch implements spec
Support deployed Kubernetes cluster using the images in a Docker
private registry with MgmtDriver in blueprint bp/cir-k8s-cluster.
It includes mgmt_driver scripts of deploying a Docker private
registry to vm created by openstack_driver.
Support instantiate/terminate/heal function.
It includes mgmt_driver scripts of deploying kubernetes cluster
that can use images in Docker private registry to vm created by
openstack_driver.
Support instantiate/terminate/scale/heal function.
It also includes a shell script that actual install kubernetes
cluster and configure environment to support Docker private registry
on vm.
Implements: blueprint cir-k8s-cluster
Change-Id: I7adab1d1eaa491a37399d0b615cbee4c6ae86657