Add support Kubernetes Provider

[sergeylanzman]

Kubernetes provider can be supported by terraformer.
Use kubernetes go client for get IDs.
Use kubectl config default file.

docs: https://www.terraform.io/docs/providers/kubernetes/index.html

[pdecat]

On the kubernetes YAML to terraform configuration generation front, there's https://github.com/sl1pm4t/k2tf which is quite effective.

[osdemah]

I'm going for implementing it. to make GetSupportedService more flexible, we can use client-go discovery methods such as ServerPreferredResources. Then It's quite straightforward to extract resources of each type via clientset apis.

[sergeylanzman]

Ok GetSupportedService it's part of interface, you can change implementation in kubernetes provider.
GetSupportedService - return list of terraformer support services, not provider.

[osdemah]

Yeah, I was saying about the supported services as well. The ServerPreferredResources will return list of resources that are supported by k8s server. I was saying instead of hardcoding the list of supported k8s resources, I can use client-go to return a list of available k8s resources from k8s api-server.