* Update to work with k8s 2.0
This makes the necessary changes to get the collection working with
kubernetes.core 2.0. The biggest changes here will be switching from the
openshift client to the kubernetes client, and dropping Python 2
support.
* Install kubernetes not openshift
* Add changelog fragment
* Issue #1: Initial effort to lift some content out of the Kubernetes collection.
* Issue #1: Disable integration tests for now, as they're not relevant.