Add missing step to in-cluster-client-configuration example

If the permissions are not setup correctly the example fails.

Change-Id: I167ef68be66f8b56740236ae475c3b7fdcc0dfb5

Kubernetes-commit: d222c310aaa4ce8777094f4a37a920982aff794d

examples/in-cluster-client-configuration/README.md

@@ -25,7 +25,13 @@ build the image on Minikube:
     docker build -t in-cluster .
 
 If you are not using Minikube, you should build this image and push it to a registry
-that your Kubernetes cluster can pull from.
+that your Kubernetes cluster can pull from. If you have RBAC enabled, use the following
+snippet to create role binding which will grant the default service account view
+permissions.
+
+```
+kubectl create clusterrolebinding default-view --clusterrole=view --serviceaccount=default:default
+```
 
 Then, run the image in a Pod with a single instance Deployment: