ceph-handler: group listen topics and condition

ceph-handler: group listen topics and condition

We are using multiple listen topics with the handlers. That means that
we are notifying 4 tasks for each handler.
Instead we can group the listen on an include_tasks and based on the
group condition.

Before:

NOTIFIED HANDLER ceph-handler : set _mon_handler_called before restart for mon0
NOTIFIED HANDLER ceph-handler : copy mon restart script for mon0
NOTIFIED HANDLER ceph-handler : restart ceph mon daemon(s) for mon0
NOTIFIED HANDLER ceph-handler : set _mon_handler_called after restart for mon0
NOTIFIED HANDLER ceph-handler : set _osd_handler_called before restart for mon0
NOTIFIED HANDLER ceph-handler : copy osd restart script for mon0
NOTIFIED HANDLER ceph-handler : restart ceph osds daemon(s) for mon0
NOTIFIED HANDLER ceph-handler : set _osd_handler_called after restart for mon0
NOTIFIED HANDLER ceph-handler : set _mds_handler_called before restart for mon0
NOTIFIED HANDLER ceph-handler : copy mds restart script for mon0
NOTIFIED HANDLER ceph-handler : restart ceph mds daemon(s) for mon0
NOTIFIED HANDLER ceph-handler : set _mds_handler_called after restart for mon0
NOTIFIED HANDLER ceph-handler : set _rgw_handler_called before restart for mon0
NOTIFIED HANDLER ceph-handler : copy rgw restart script for mon0
NOTIFIED HANDLER ceph-handler : restart ceph rgw daemon(s) for mon0
NOTIFIED HANDLER ceph-handler : set _rgw_handler_called after restart for mon0
NOTIFIED HANDLER ceph-handler : set _mgr_handler_called before restart for mon0
NOTIFIED HANDLER ceph-handler : copy mgr restart script for mon0
NOTIFIED HANDLER ceph-handler : restart ceph mgr daemon(s) for mon0
NOTIFIED HANDLER ceph-handler : set _mgr_handler_called after restart for mon0
NOTIFIED HANDLER ceph-handler : set _rbdmirror_handler_called before restart for mon0
NOTIFIED HANDLER ceph-handler : copy rbd mirror restart script for mon0
NOTIFIED HANDLER ceph-handler : restart ceph rbd mirror daemon(s) for mon0
NOTIFIED HANDLER ceph-handler : set _rbdmirror_handler_called after restart for mon0

After:

NOTIFIED HANDLER ceph-handler : mons handler for mon0
NOTIFIED HANDLER ceph-handler : osds handler for mon0
NOTIFIED HANDLER ceph-handler : mdss handler for mon0
NOTIFIED HANDLER ceph-handler : rgws handler for mon0
NOTIFIED HANDLER ceph-handler : mgrs handler for mon0
NOTIFIED HANDLER ceph-handler : rbdmirrors handler for mon0

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>