ceph-disk is now deprecated in ceph-ansible so let's convert all the ci
tests to use lvm instead of ceph-disk.
Signed-off-by: Sébastien Han <seb@redhat.com>
Let's create a dedicated environment for these scenarios, there is no
need to deploy everything.
By the way, doing so will save some times.
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>