Undercloud install failing

Issue

• Undercloud install is failing with errors like below for all container images:

failed: [ostack7-director-train] (item=ostack7-director-train.ctlplane.localdomain:8787/rhosp-rhel8/openstack-rabbitmq:16.1) => {"ansible_loop_var": "prefetch_image", "changed": false, "msg": "Failed to pull image ostack7-director-train.ctlplane.localdomain:8787/rhosp-rhel8/openstack-rabbitmq:16.1", "prefetch_image": "ostack7-director-train.ctlplane.localdomain:8787/rhosp-rhel8/openstack-rabbitmq:16.1"}