Parameterize CORD app version

Change-Id: I4f9e9f3d383d46bd260a5009121318396b582a8d
diff --git a/roles/xos-install/templates/vtn.yaml.j2 b/roles/xos-install/templates/vtn.yaml.j2
index 177dd61..f162609 100644
--- a/roles/xos-install/templates/vtn.yaml.j2
+++ b/roles/xos-install/templates/vtn.yaml.j2
@@ -97,7 +97,7 @@
               node: service#vtn
               relationship: tosca.relationships.UsedByService
       properties:
-          install_dependencies: http://mavenrepo:8080/repository/org/opencord/cord-config/1.1-SNAPSHOT/cord-config-1.1-SNAPSHOT.oar,http://mavenrepo:8080/repository/org/opencord/vtn/1.1-SNAPSHOT/vtn-1.1-SNAPSHOT.oar
+          install_dependencies: http://mavenrepo:8080/repository/org/opencord/cord-config/{{ cord_app_version}}/cord-config-{{ cord_app_version }}.oar,http://mavenrepo:8080/repository/org/opencord/vtn/{{ cord_app_version }}/vtn-{{ cord_app_version }}.oar
           dependencies: org.onosproject.drivers, org.onosproject.drivers.ovsdb, org.onosproject.openflow-base, org.onosproject.ovsdb-base, org.onosproject.dhcp
           autogenerate: vtn-network-cfg