[CORD-3100] Upgrading TOSCA to new ONOS Service format

Change-Id: I0863881a305a78fe918d3558f4475a90c7d3b966
diff --git a/examples/image-tag-candidate.yaml b/examples/image-tag-candidate.yaml
index 321359e..1572a8d 100644
--- a/examples/image-tag-candidate.yaml
+++ b/examples/image-tag-candidate.yaml
@@ -49,4 +49,6 @@
   hippieOSS_synchronizerImage: 'xosproject/hippie-oss-synchronizer:candidate'
 openstack:
   openstack_synchronizerImage: 'xosproject/openstack-synchronizer:candidate'
+vtn-service:
+  vtn_synchronizerImage: 'xosproject/vtn-synchronizer:candidate'