terminate when ssh session is killed

Change-Id: I145cc9de4c7006efb56661d0f64d4158fe4aee1b

@@ -24,7 +24,7 @@ if [ $less -eq 1 ]; then
     ssh -t $remote "less $LOG"
 else
     trap "ssh $remote 'ps -ef | grep \"tail -n 512\" | grep -v grep | cut -c10-15 | xargs kill'" EXIT
-    ssh $remote "
+    ssh -t $remote "
     while true; do
         echo ==================================================================
         [ ! -f $LOG ] && sleep 2 && continue

@@ -8,7 +8,7 @@
 
 remote=$ONOS_USER@${1:-$OCI}
 
-ssh $remote "
+ssh -t $remote "
     # Wait until we reach the run-level 100
     running=""
     while [ -z \$running ]; do