adding sample kubeconfig file for testing

Change-Id: I0ed3ceaae5d1a8b36affaa05ce830a3821eec7a0

doc/node-kubeconfig.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: Config
+clusters:
+- name: local
+  cluster:
+    insecure-skip-tls-verify: true
+    server: https://<master-IP-Address>:6443
+contexts:
+- context:
+    cluster: local
+    user: admin
+  name: kubelet-context
+current-context: kubelet-context
+users:
+- name: admin
+  user:
+    password: admin
+    username: admin