Additionally, a charm can request that a pool be added
to a group when creating a pool
Change-Id: Ide11d74f1472fcddcabf9475b935bd57dba88ce7
Partial-Bug: 1424771
Helper functions for the ceph charms. This library has shared functionality that is used in the ceph-mon, ceph-osd and ceph
charms. Anything that needs to be shared across the ceph charms should live here.