network policy demo march21

###### nwpolicy demo on external machine (works only with decent network plugin ######
###### FAILS ON MINIKUBE ########
   10 git clone https://github.com/sandervanvugt/cka
   11  vim nwpolicy-complete-example.yaml
   12  kubectl get svc
   13  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
   14  kubectl get pods --show-labels
   15  kubectl label pod busybox access=true
   16  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
   17  history

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