Let the plugin setup and configure CephFS as the storage backend for
Manila. This is not done by default. Refer the README to do so.
Add 'pre_test_hook' and 'post_test_hook' scripts that would be needed
to configure Manila-Ceph CI jobs.
The following changes are also made:
* Install a development version of Ceph that is compatible with Manila's
CephFSNative driver.
* The development version is a version greater than Infernalis. And
from Infernalis onwards, the ceph daemons are run as user "ceph".
So allow the daemons to run as user "ceph" for such versions.
* Enhance get_ceph_version to check Ceph version even when the
ceph mon daemon is not up, by checking the CLI version.
Co-Authored-By: John Spray <john.spray@redhat.com>
Change-Id: I74314bfcc6b52d524bb84f2232a988f275b9afbf
530f20c38d