Distributed topic primitive

Change-Id: Ia3ccd84c33075f297d7e6b9bc205efe92aec9bea
diff --git a/core/api/src/main/java/org/onosproject/store/service/DistributedPrimitive.java b/core/api/src/main/java/org/onosproject/store/service/DistributedPrimitive.java
index 77bfd09..b19a04b 100644
--- a/core/api/src/main/java/org/onosproject/store/service/DistributedPrimitive.java
+++ b/core/api/src/main/java/org/onosproject/store/service/DistributedPrimitive.java
@@ -67,6 +67,11 @@
         WORK_QUEUE,
 
         /**
+         * Distributed topic.
+         */
+        TOPIC,
+
+        /**
          * Leader elector.
          */
         LEADER_ELECTOR,