Add node IP attribute in k8s node class with minor code refactoring

Change-Id: I4c1c86c95acfeb38569b91c1677e4ce8af90460f
diff --git a/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeWebResourceTest.java b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeWebResourceTest.java
index 1005ab2..9908e99 100644
--- a/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeWebResourceTest.java
+++ b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeWebResourceTest.java
@@ -97,6 +97,7 @@
                 .type(K8sNode.Type.MINION)
                 .dataIp(IpAddress.valueOf("10.134.34.222"))
                 .managementIp(IpAddress.valueOf("10.134.231.30"))
+                .nodeIp(IpAddress.valueOf("30.30.30.3"))
                 .intgBridge(DeviceId.deviceId("of:00000000000000a1"))
                 .extBridge(DeviceId.deviceId("of:00000000000000b1"))
                 .state(K8sNodeState.INIT)