[PR] Test for finalizers

[kopf-archiver]

A pull request by nolar at 2019-06-01 13:13:23+00:00
Original URL: zalando-incubator/kopf#90
Merged by nolar at 2019-06-07 12:29:14+00:00

Issue : #13

Add tests for the finalizers: appending, removing, checking.

Also change the finalizer to a FQDN string — as once I hit the issue that the finalizer cannot be an arbitrary string (e.g. when assigning it to a pod in Minikube; but it works with custom resources though).

But keep the legacy finalizer (just a string, not FQDN) if it is assigned to the existing resource — for checking and for removing.