Automatic merge from submit-queue

Able to quick create a HA cluster by kube-up.sh centos provider

Make `kube-up.sh` `centos provider` support quick create a HA cluster, as I said above [#39430](https://github.com/kubernetes/kubernetes/issues/39430), it's more flexible than `kops` or `kubeadm` for some people in a limited network region.

I'm new to k8s dev, so if this pull request need to change, please let me know.

```release-note
Added support for creating HA clusters for centos using kube-up.sh.
```