Initial implementation of GossipIntentStore.

Create/update operations are implemented and working in 2-node cluster.
No remove operations yet.

Change-Id: Ief68c9d5c3bb483823b6f92d29fa83df0ab7b58f
diff --git a/core/store/dist/src/main/java/org/onosproject/store/intent/impl/GossipIntentStoreMessageSubjects.java b/core/store/dist/src/main/java/org/onosproject/store/intent/impl/GossipIntentStoreMessageSubjects.java
new file mode 100644
index 0000000..d6daeb9
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onosproject/store/intent/impl/GossipIntentStoreMessageSubjects.java
@@ -0,0 +1,32 @@
+/*
+ * 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.intent.impl;
+
+import org.onosproject.store.cluster.messaging.MessageSubject;
+
+/**
+ * Message subjects for internal gossip intent store node-to-node messages.
+ */
+public final class GossipIntentStoreMessageSubjects {
+    private GossipIntentStoreMessageSubjects() {}
+
+    public static final MessageSubject INTENT_UPDATED_MSG
+            = new MessageSubject("peer-intent-updated");
+    public static final MessageSubject INTENT_SET_INSTALLABLES_MSG
+            = new MessageSubject("peer-intent-set-installables");
+    public static final MessageSubject INTENT_ANTI_ENTROPY_ADVERTISEMENT
+            = new MessageSubject("intent-anti-entropy-advertisement");
+}