Common: Improve check pgs
Common: Improve check pgs

For some reason we changed the check of pgs but it appears it could be
dangerous because the current check might satisfied as long as 1 PG is
active+clean.

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

ceph/ansible-ceph-common