Assign labels to nodes
Assign labels to nodes

Make sure nodes have, at least, the region and zone labels to allow for
deployments to schedule infra PODs on them.

Change-Id: If3849a46391cfac7eb5dd556d5b65c831026a95c

dprince/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates