Supports downlink trace functionality in OpenstackNetworkingUI

Change-Id: Ide25681e83d34b22393483b3b06e8834693a18ec
(cherry picked from commit 5aef9826f6232d2605bbe11a97b9487c56f575a4)
diff --git a/apps/openstacknetworkingui/BUCK b/apps/openstacknetworkingui/BUCK
index 12f1264..2f2fe68 100644
--- a/apps/openstacknetworkingui/BUCK
+++ b/apps/openstacknetworkingui/BUCK
@@ -11,6 +11,7 @@
   '//apps/openstacknode/api:onos-apps-openstacknode-api',
   '//apps/openstacktelemetry/api:onos-apps-openstacktelemetry-api',
   '//apps/openstacknetworking/api:onos-apps-openstacknetworking-api',
+  '//apps/openstacknetworking/app:onos-apps-openstacknetworking-app',
 ]
 
 EXCLUDED_BUNDLES = [