Initial support for multi kubernetes clusters for k8s nodes

Change-Id: I6ca132898f8e157e0583de38a637fdc135f21d6f
(cherry picked from commit e2a04cedde73618ef24575e70cb221e03854de1d)
diff --git a/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sSwitchingGatewayHandler.java b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sSwitchingGatewayHandler.java
index d7d7638..2f994da 100644
--- a/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sSwitchingGatewayHandler.java
+++ b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sSwitchingGatewayHandler.java
@@ -240,7 +240,7 @@
         if (REPLY.equals(type)) {
             sBuilder.matchIPSrc(IpPrefix.valueOf(k8sNetwork.gatewayIp(),
                     HOST_PREFIX));
-            tBuilder.setOutput(k8sNode.localToIntgPatchPortNumber());
+            tBuilder.setOutput(k8sNode.localToIntgPatchPortNum());
         }
 
         k8sFlowRuleService.setRule(