Custom Resource Definitions (CRDs) are successor of TPRs. We should add support for those in next version of kubernetes.

• Feature issue: CustomResourceDefinitions kubernetes/enhancements#95
• Design proposal: https://github.com/kubernetes/community/blob/master/contributors/design-proposals/thirdpartyresources.md
• CRD documentation: https://github.com/kubernetes/kubernetes.github.io/blob/release-1.7/docs/tasks/access-kubernetes-api/extend-api-custom-resource-definitions.md
• TPR deprecation notice and migration path: https://github.com/kubernetes/kubernetes.github.io/blob/release-1.7/docs/tasks/access-kubernetes-api/extend-api-third-party-resource.md
• issue about accessing the apiextensions-apiserver client: Accessible client for CustomResourceDefinitions (TPR successor) kubernetes/kubernetes#46702
• client-go example for CRDs: https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/apiextensions-apiserver/examples/client-go