increase time for docker-env test
increase time for docker-env test

dalehamel/minikube,warmchang/minikube,warmchang/minikube,warmchang/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube,dalehamel/minikube,kubernetes/minikube,dalehamel/minikube,kubernetes/minikube,kubernetes/minikube