Enable the nova v3 api
Enable the nova v3 api

This should allow us to enable around 600 additional tempest tests
and will make the v3 api available to those who want to use it.

Change-Id: I5fa096a7117f575675b47101f22e5b37a86616e0

radez/tripleo-image-elements,openstack/tripleo-image-elements,rdo-management/tripleo-image-elements,rdo-management/tripleo-image-elements,openstack/tripleo-image-elements,radez/tripleo-image-elements