feat(cluster): add default clustering feature

broker/src/main/java/io/moquette/interception/HazelcastMsg.java

@@ -0,0 +1,44 @@
+package io.moquette.interception;
+
+import java.io.Serializable;
+
+/**
+ * Created by mackristof on 28/05/2016.
+ */
+public class HazelcastMsg implements Serializable{
+
+    private final String clientId;
+    private final String userName;
+    private final byte qos;
+    private final String payload;
+    private final String topic;
+
+    public HazelcastMsg(String clientId, String topic , byte qos, byte[] payload, String userName) {
+        this.clientId = clientId;
+        this.qos = qos;
+        this.payload = new String(payload);
+        this.userName = userName;
+        this.topic = topic;
+    }
+
+
+    public String getClientId() {
+        return clientId;
+    }
+
+    public byte getQos() {
+        return qos;
+    }
+
+    public String getPayload() {
+        return payload;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public String getTopic() {
+        return topic;
+    }
+}