Cleaning up app categories and default app origin to be "ONOS Community"

Change-Id: Ia01dffcbd2c4dcf615dd3af5e2f941a5d4beff42
diff --git a/protocols/p4runtime/BUCK b/protocols/p4runtime/BUCK
index e677f9f..bf89ed7 100644
--- a/protocols/p4runtime/BUCK
+++ b/protocols/p4runtime/BUCK
@@ -7,7 +7,7 @@
 onos_app(
     app_name = 'org.onosproject.protocols.p4runtime',
     title = 'P4Runtime Protocol Subsystem',
-    category = 'Protocols',
+    category = 'Protocol',
     url = 'http://onosproject.org',
     description = 'ONOS P4Runtime protocol subsystem',
     included_bundles = BUNDLES,