osd: avoid using non desired loop device in autodiscovery
osd: avoid using non desired loop device in autodiscovery

This will prevent ceph-ansible from using a loop device while it
shouldn't in auto_discovery mode.

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

font/ceph-ansible,travmi/ceph-ansible,ceph/ceph-ansible,fgal/ceph-ansible,travmi/ceph-ansible,font/ceph-ansible,ceph/ceph-ansible,fgal/ceph-ansible