Added Netty based messaging. Updated cluster management to use Netty based messaging
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/SerializationService.java b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/SerializationService.java
index 7521630..d85f488 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/SerializationService.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/SerializationService.java
@@ -1,7 +1,5 @@
 package org.onlab.onos.store.cluster.messaging;
 
-import java.nio.ByteBuffer;
-
 /**
  * Service for encoding & decoding intra-cluster messages.
  */
@@ -13,7 +11,7 @@
      * @param buffer byte buffer with message(s)
      * @return parsed message
      */
-    ClusterMessage decode(ByteBuffer buffer);
+    Object decode(byte[] data);
 
     /**
      * Encodes the specified message into the given byte buffer.
@@ -21,6 +19,6 @@
      * @param message message to be encoded
      * @param buffer byte buffer to receive the message data
      */
-    void encode(ClusterMessage message, ByteBuffer buffer);
+    byte[] encode(Object message);
 
 }