switch to new VTN API

Change-Id: Ia59b64e1de90ca86cebc57a918468c60ed12052e
diff --git a/cord-pod/make-vtn-external-yaml.sh b/cord-pod/make-vtn-external-yaml.sh
index 5a3fd18..6cba10e 100644
--- a/cord-pod/make-vtn-external-yaml.sh
+++ b/cord-pod/make-vtn-external-yaml.sh
@@ -37,6 +37,7 @@
           xosUser: padmin@vicci.org
           xosPassword: letmein
           replaces: service_vtn
+          vtnAPIVersion: 2
 
 EOF