Enable cell_v2 setup for p-o-i
Enable cell_v2 setup for p-o-i

This change adds in the ability to test the cell_v2 setup for nova.

Change-Id: I08efa36f5f62ae406ab20e8da77c01fbf3d9b11f
Depends-On: Idfc369e9e17f7d5a30ce4ff52beb604dd4a6ac23
Related-Bug: #1649341

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration