Ceph Ansible support

Add the initial playbooks for making ceph and ansible play nice
together.

This does not include all of the openstack changes to make things like
nova, glance, and cinder work. This will simply build the ceph cluster
and thats it. The next patchset will do the OpenStack integration.

DocImpact
Change-Id: Ie1697dde5f92e833652933a80f0004f31b641330
Partially-Implements: blueprint ceph-container