Starting with a pristine cluster, it initially deploys the controller
and unready Services for Varnish Ingress, and verifies the deployment.

Then each of the examples are deployed, verified, and undeployed.

On exit the Services for Ingress and controller are undeployed,
restoring the pristine state of the cluster.

Deployment is now in the API group apps/v1.

RBAC for the namespace example was missing rules to access resources
in the ingress.varnish-cache.org APIs.

Otherwise no backend is set for background fetches.

Newer versions of the RPMs for compatibility with Varnish 6.2
evidently do not express dependencies narrowly enough.

Closes #24

Reduces repetition in the code. The CRD limits the comparison
operations permitted for certain configs (ACL, rewrite,
req-disposition).