Group AUDIT enhancements

Change-Id: I867e57e616a727efaf940810e1fef7806ca5d28f
diff --git a/core/store/dist/src/main/java/org/onosproject/store/flowobjective/impl/DistributedFlowObjectiveStore.java b/core/store/dist/src/main/java/org/onosproject/store/flowobjective/impl/DistributedFlowObjectiveStore.java
index 8dbc634..e8ea24f 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/flowobjective/impl/DistributedFlowObjectiveStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/flowobjective/impl/DistributedFlowObjectiveStore.java
@@ -62,6 +62,7 @@
                 .withSerializer(Serializer.using(
                         new KryoNamespace.Builder()
                                 .register(byte[].class)
+                                .register(Versioned.class)
                                 .build()))
                 .build();