terminate when ssh session is killed

Change-Id: I145cc9de4c7006efb56661d0f64d4158fe4aee1b
diff --git a/tools/test/bin/onos-wait-for-start b/tools/test/bin/onos-wait-for-start
index 62cf360..106165a 100755
--- a/tools/test/bin/onos-wait-for-start
+++ b/tools/test/bin/onos-wait-for-start
@@ -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