Cleaning up application categories.

Change-Id: Id3c937323123b6089cedf7b31cd01151f6aca8e1
diff --git a/apps/virtualbng/BUCK b/apps/virtualbng/BUCK
index 9845b93..036ce08 100644
--- a/apps/virtualbng/BUCK
+++ b/apps/virtualbng/BUCK
@@ -16,7 +16,7 @@
 
 onos_app (
     title = 'Virtual Broadband Gateway',
-    category = 'Traffic Steering',
+    category = 'Traffic Engineering',
     url = 'http://onosproject.org',
     description = 'A virtual Broadband Network Gateway(BNG) application.',
 )