Otherwise any ceph directories are left over on client nodes
after the purge.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2024815

Signed-off-by: Guillaume Abrioux <[email protected]>
(cherry picked from commit 20035852a4e51f3800808bc4c71b0e0be86b8132)
(cherry picked from commit e676502c8fc2af9e7c7fafcc26767715de2d5f63)