Fix cpman Buck build

Change-Id: I08d6db71a4e78a5528377cc4489decaa5b763248
diff --git a/providers/openflow/message/BUCK b/providers/openflow/message/BUCK
index b9caae2..77ec836 100644
--- a/providers/openflow/message/BUCK
+++ b/providers/openflow/message/BUCK
@@ -15,6 +15,7 @@
 )
 
 onos_app (
+    app_name = 'org.onosproject.openflow-message',
     title = 'Control Message Stats Provider',
     category = 'Provider',
     url = 'http://onosproject.org',