Force allocation of a tty in onos-wait-for-start

Change-Id: I1788fb2edfebbb33d2c97cf3aeea69486b98f7cc
diff --git a/tools/test/bin/onos-wait-for-start b/tools/test/bin/onos-wait-for-start
index e0ebb54..ec9698a 100755
--- a/tools/test/bin/onos-wait-for-start
+++ b/tools/test/bin/onos-wait-for-start
@@ -11,7 +11,7 @@
 
 remote=$ONOS_USER@$node
 
-ssh -t $remote "
+ssh -t -t $remote "
     # Wait until we reach the run-level 100
     for i in {1..90}; do
         $ONOS_INSTALL_DIR/bin/onos bundle:list 2>/dev/null | \