ONOS-4499 Correct missed dependences of routing app in VPLS.

Change-Id: I8a84692da53cbda5657d62cb6311c144efbee859
diff --git a/apps/vpls/BUCK b/apps/vpls/BUCK
index 008cfcb..ffe8b35 100644
--- a/apps/vpls/BUCK
+++ b/apps/vpls/BUCK
@@ -7,6 +7,7 @@
     '//utils/rest:onlab-rest',
     '//incubator/api:onos-incubator-api',
     '//apps/routing-api:onos-apps-routing-api',
+    '//apps/routing:onos-apps-routing',
 ]
 
 TEST_DEPS = [