Added ability to form a cluster via REST API.

Change-Id: Ib71f6b4caed1b1c4b9db78596ee35bf5cab05184
diff --git a/core/api/src/main/java/org/onosproject/cluster/DefaultControllerNode.java b/core/api/src/main/java/org/onosproject/cluster/DefaultControllerNode.java
index 31185dd..7d701d9 100644
--- a/core/api/src/main/java/org/onosproject/cluster/DefaultControllerNode.java
+++ b/core/api/src/main/java/org/onosproject/cluster/DefaultControllerNode.java
@@ -26,7 +26,7 @@
  */
 public class DefaultControllerNode implements ControllerNode {
 
-    private static final int DEFAULT_PORT = 9876;
+    public static final int DEFAULT_PORT = 9876;
 
     private final NodeId id;
     private final IpAddress ip;