Adding the ability for a node to act as a Load Balancer.
We can deploy the load balancer also in its own load balancer cluster.

Files:
modified: /webservices/axis2/trunk/java/modules/clustering/src/org/apache/axis2/clustering/tribes/TribesClusterManager.java (try)
modified: /webservices/axis2/trunk/java/modules/kernel/src/org/apache/axis2/clustering/ClusteringConstants.java (try)
added: /webservices/axis2/trunk/java/modules/clustering/src/org/apache/axis2/clustering/tribes/LoadBalancerInterceptor.java (try)
modified: /webservices/axis2/trunk/java/modules/kernel/conf/axis2.xml (try)