The grammer for ceph osd capabilities shows that permissions can
be applied to a pool or to a object_prefix:
match := [pool[=]<poolname> | object_prefix <prefix>]
This patch adds support for requesting object_prefix permissions on
a given set of prefixes.
http://docs.ceph.com/docs/firefly/man/8/ceph-authtool/#osd-capabilities
Partial-Bug: #1696073
Change-Id: I799f87fe2178ed7d3e44f14e2fa0683f917d2f0d
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.