Make systemd stop corosync-notifyd if corosync is stopped

Otherwise is just exits successfully (which should probably be fixed
eventually), leading to confusion.

Signed-off-by: Ferenc Wágner <wferi@debian.org>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>

init/corosync-notifyd.service.in

@@ -1,7 +1,7 @@
 [Unit]
 Description=Corosync Dbus and snmp notifier
 Documentation=man:corosync-notifyd
-Wants=corosync.service
+Requires=corosync.service
 After=corosync.service
 
 [Service]