OpenShift support should be via `import openshift` or other existing Python package

[RobertKrawitz]

There's an existing openshift package available on PyPi that provides OpenShift support. Reference https://github.com/RobertKrawitz/OpenShift4-tools/blob/7f38a73f61fde0d7dcf43de2814c0cf14a5199cd/experimental/prom-extract

[RobertKrawitz]

This should be done at some point, but is not especially high priority as the existing use of oc is well enough encapsulated.