Initial libvirt and nova-compute structure

This lays the groundwork for the docker compute container.

The compute node is composed of libvirt container and a nove-compute
container.  We are going to have to sort out how to get k8s to schedule
this pod 1 per node.

Change-Id: I1e06e4b5f5bde83b582edfc1094084a4ee353371
Partial-blueprint: kube-libvirt-container
Partial-blueprint: kube-nova-container
Merge "Initial libvirt and nova-compute structure"