Adding support for OpenShift

[draygoX]

OpenShift has more stringent things around permissions. An example can be found in strimzi/strimzi-kafka-operator#12030

Similiar needs to be implemented in the registry operator to have it play nice in openshift environments.

https://github.com/lsst-sqre/strimzi-registry-operator/blob/main/manifests/rbac.yaml#L34 can be patched to include:

- apiGroups: [roundtable.lsst.codes]
  resources: [strimzischemaregistries/finalizers]
  verbs: [update]

[afausti]

Thanks for the contribution @draygoX planning on releasing this soon.