defaults: fix osd containers handler
defaults: fix osd containers handler

`ceph_osd_container_stat` might not be set on other osd node.
We must ensure we are on the last node before trying to evaluate
`ceph_osd_container_stat`.

This should have been backported but it's part of a too important
refact in master that can't be backported.

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

fgal/ceph-ansible,fgal/ceph-ansible