Distributed group store using eventual consistent map abstraction

Change-Id: I618a0f6fa80e0e25285d7a2026032f09ba90aa70
diff --git a/core/store/dist/src/main/java/org/onosproject/store/group/impl/GroupStoreMessageSubjects.java b/core/store/dist/src/main/java/org/onosproject/store/group/impl/GroupStoreMessageSubjects.java
new file mode 100644
index 0000000..dbee22c
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onosproject/store/group/impl/GroupStoreMessageSubjects.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.store.group.impl;
+
+import org.onosproject.store.cluster.messaging.MessageSubject;
+
+/**
+ * MessageSubjects used by DistributedGroupRuleStore peer-peer communication.
+ */
+public final class GroupStoreMessageSubjects {
+    private GroupStoreMessageSubjects() {}
+
+    public static final  MessageSubject REMOTE_GROUP_OP_REQUEST
+        = new MessageSubject("peer-forward-group-op-req");
+}