ceph-disk: Add destroy and deactivate option
ceph-disk now understands deactivate to shutdown an OSD and umount the partition. It will remain in a "down" state until it is activated again with --reactivate. If a deactivated OSD is destroyed with ceph-disk destroy, it will be permanently removed from the cluster and from the crushmap.
Reviewed-by: Loic Dachary <ldachary@redhat.com>