Deploy necessary configs and keyrings for multiple
ceph cluters. Specifically, the intent is to enable
multiple backends for cinder that can be accessed by
compute nodes.
This change will allow automatic retrieval of
ceph.conf and client keyrings from multiple ceph clusters.
Additionally, libvirt ceph client secrets will be created
to support attaching volumes to instances from multiple
ceph clusters.
Change-Id: Icee061b35f374955154a3dd703444b94da0117da