Added ability to form a cluster via REST API.

Change-Id: Ib71f6b4caed1b1c4b9db78596ee35bf5cab05184
diff --git a/cli/src/main/java/org/onosproject/cli/NodeAddCommand.java b/cli/src/main/java/org/onosproject/cli/NodeAddCommand.java
index 8c4cdc7..170e233 100644
--- a/cli/src/main/java/org/onosproject/cli/NodeAddCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/NodeAddCommand.java
@@ -18,6 +18,7 @@
 import org.apache.karaf.shell.commands.Argument;
 import org.apache.karaf.shell.commands.Command;
 import org.onosproject.cluster.ClusterAdminService;
+import org.onosproject.cluster.DefaultControllerNode;
 import org.onosproject.cluster.NodeId;
 import org.onlab.packet.IpAddress;
 
@@ -38,7 +39,7 @@
 
     @Argument(index = 2, name = "tcpPort", description = "Node TCP listen port",
               required = false, multiValued = false)
-    int tcpPort = 9876;
+    int tcpPort = DefaultControllerNode.DEFAULT_PORT;
 
     @Override
     protected void execute() {