Updating operator-registry builder & base images to be consistent with ART#471

jupierce wants to merge 1 commit intooperator-framework:masteroperator-framework/operator-registry:masterfrom

jupierce:art-consistency-openshift-4.7-operator-registryjupierce/operator-registry:art-consistency-openshift-4.7-operator-registryCopy head branch name to clipboard