Use openstack4j for OpenStack data model and rest client

Change-Id: I4eb52c3c82d847c442420d1287392fe9079bf699
diff --git a/apps/cordvtn/app.xml b/apps/cordvtn/app.xml
index 11e78cb..5163375 100644
--- a/apps/cordvtn/app.xml
+++ b/apps/cordvtn/app.xml
@@ -18,7 +18,7 @@
         category="Traffic Steering" url="http://onosproject.org" title="CORD Virtual Tenant Network"
         featuresRepo="mvn:${project.groupId}/${project.artifactId}/${project.version}/xml/features"
         features="${project.artifactId}"
-        apps="org.onosproject.ovsdb-base,org.onosproject.openstackinterface,org.onosproject.dhcp">
+        apps="org.onosproject.ovsdb-base,org.onosproject.dhcp">
     <description>${project.description}</description>
     <artifact>mvn:${project.groupId}/onos-app-cordvtn/${project.version}</artifact>
 </app>