tests: update ceph_volume tests
tests: update ceph_volume tests

accordingly to change introduced by b5548ea9412cd7741bee993dddcbfd9daa34cb02

Signed-off-by: Guillaume Abrioux <30a9df5a0293a6108675377fa1673f7aa713f915@redhat.com>

ceph/ceph-ansible,ceph/ceph-ansible