add kubernetes yaml demo

[wangwei10061]

If needed, the address for the KVM plugin is as follows: https://github.com/kubevirt/kubernetes-device-plugins.git

[kroese]

The problem with this pull-request is that I have zero experience with Kubernetes. So I cannot estimate the quality of this example, and I saw that @zzvara already had some doubts about this code.

So if anyone can confirm this works good and does not need to be improved, I will merge it immediately.