facts: fix osp/ceph external use case
facts: fix osp/ceph external use case

d6da508a9b6829d2d0633c7200efdffce14f403f broke the osp/ceph external use case.

We must skip these tasks when no monitor is present in the inventory.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1790508

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

ceph/ceph-ansible,ceph/ceph-ansible