terminate when ssh session is killed

Change-Id: I145cc9de4c7006efb56661d0f64d4158fe4aee1b
diff --git a/tools/test/bin/onos-log b/tools/test/bin/onos-log
index 38ff50c..774a9d3 100755
--- a/tools/test/bin/onos-log
+++ b/tools/test/bin/onos-log
@@ -24,7 +24,7 @@
     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