TT#33384 Use weaker type of services' dependency on remote-fs

The current problem is massive services restart on: systemctl restart glusterd.service
which is not really necessary on NGCP.

Use 'Wants' instead of 'Requires' so dependent services aren't
restarted on restart of remote-fs.target.

Change-Id: I512fdc7ae83efb10cc442da12e72d4b902dba96c

debian/ngcp-sems.service

@@ -5,7 +5,7 @@ After=redis-master.service
 After=remote-fs.target
 After=network-online.target
 Requires=network-online.target
-Requires=remote-fs.target
+Wants=remote-fs.target
 Wants=mariadb.service
 Wants=redis-master.service