In OpenShift 4 disconnected, the "oc adm node-image create" fails to use the mirror registry

Issue

• In a disconnected environment with OCP 4.17, the creation of an ISO to extend the cluster fails with the error:

  $ oc adm node-image create -v=10
  I0514 11:35:15.374331    2215 loader.go:395] Config loaded from file:  /core/install-dir/auth/kubeconfig
  ...
  I0514 11:35:18.588592    2215 workqueue.go:143] about to send work queue error: unable to read image quay.io/openshift-release-dev/ocp-release@sha256:7b39e1a5a98fa5bda517f3a1800c4bc96838fdc8318036d1b0cc519fa3534690: Get "https://quay.io/v2/": dial tcp 52.1.155.172:443: connect: connection refused
  error: unable to read image quay.io/openshift-release-dev/ocp-release@sha256:7b39e1a5a98fa5bda517f3a1800c4bc96838fdc8318036d1b0cc519fa3534690: Get "https://quay.io/v2/": dial tcp 52.1.155.172:443: connect: connection refused