Error： User "system:serviceaccount:kube-system:default" cannot get resource "namespaces"
https://github.com/fnproject/fn-helm/issues/21#issuecomment-545317241
kubectl create serviceaccount --namespace kube-system tiller
kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admin --serviceaccount=kube-system:tiller
kubectl patch deploy --namespace kube-system tiller-deploy -p '{"spec":{"template":{"spec":{"serviceAccount":"tiller"}}}}'
helm init --upgrade --service-account tiller