Update travis to latest minikube, k8s, jsonnet

tests/e2e/travis-e2e.sh

@@ -12,9 +12,6 @@ SCRIPT_DIR=$(dirname "${BASH_SOURCE[0]}")
 
 "${SCRIPT_DIR}"/../../../../scripts/create-minikube.sh
 
-# waiting for kube-dns to be ready
-JSONPATH='{range .items[*]}{@.metadata.name}:{range @.status.conditions[*]}{@.type}={@.status};{end}{end}'; until kubectl -n kube-system get pods -lk8s-app=kube-dns -o jsonpath="$JSONPATH" 2>&1 | grep -q "Ready=True"; do sleep 1;echo "waiting for kube-dns to be available"; kubectl get pods --all-namespaces; done
-
 (
     cd "${SCRIPT_DIR}"/../.. || exit
     kubectl apply -f manifests