In Luminous, Ceph changes the default OSD store to bluestore
so we want to change this to handle the change by making the
OSD store explicit
Change-Id: I2f89f47458b432fe54d9be943481845135fc8e69
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.