Supports downlink trace functionality in OpenstackNetworkingUI

Change-Id: Ide25681e83d34b22393483b3b06e8834693a18ec
(cherry picked from commit 5aef9826f6232d2605bbe11a97b9487c56f575a4)
diff --git a/apps/openstacknetworkingui/BUILD b/apps/openstacknetworkingui/BUILD
index 5058dd1..ed4f724 100644
--- a/apps/openstacknetworkingui/BUILD
+++ b/apps/openstacknetworkingui/BUILD
@@ -8,6 +8,7 @@
     "//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",
     "@sshd_core//jar",
 ]