"openstack overcloud image build" hangs on "subscription-manager register"

Issue

• openstack overcloud image hangs on "subscription-manager register":

...
2022-06-09 23:16:05.792 | dib-run-parts 00-dnf-update completed
2022-06-09 23:16:05.792 | dib-run-parts Running /tmp/in_target.d/pre-install.d/00-fix-requiretty
2022-06-09 23:16:05.800 | /etc/sudoers: parsed OK
2022-06-09 23:16:05.802 | dib-run-parts 00-fix-requiretty completed
2022-06-09 23:16:05.802 | dib-run-parts Running /tmp/in_target.d/pre-install.d/00-iptables-disable-autosave
2022-06-09 23:16:05.804 | + set -o pipefail
2022-06-09 23:16:05.804 | + [[ ubuntu debian =~ rhel ]]
2022-06-09 23:16:05.805 | dib-run-parts 00-iptables-disable-autosave completed
2022-06-09 23:16:05.805 | dib-run-parts Running /tmp/in_target.d/pre-install.d/00-rhel-registration
2022-06-09 23:16:05.812 | Installing satellite dependencies
2022-06-09 23:16:05.838 | Retrieving http://satellite.localdomain/pub/katello-ca-consumer-latest.noarch.rpm
2022-06-09 23:16:05.838 | Verifying...                          ########################################
2022-06-09 23:16:05.838 | Preparing...                          ########################################
2022-06-09 23:16:05.842 | Updating / installing...
2022-06-09 23:16:05.842 | katello-ca-consumer-satellite.localdomain-1.0-1########################################
2022-06-09 23:16:06.284 |
2022-06-09 23:16:06.285 | WARNING
2022-06-09 23:16:06.285 |
2022-06-09 23:16:06.285 | The yum/dnf plugins: /etc/dnf/plugins/subscription-manager.conf, /etc/dnf/plugins/product-id.conf were automatically enabled for the benefit of Red Hat Subscription Management. If not desired, use "subscription-manager config --rhsm.auto_enable_yum_plugins=0" to block this behavior.
2022-06-09 23:16:06.285 |
2022-06-09 23:16:08.028 | Registering with options:  --baseurl=https://satellite.localdomain/pulp/repos --password *** --username admin
2022-06-09 23:16:08.803 | Registering to: satellite.localdomain:443/rhsm

• Here is the gen_image.sh script:

export DIB_LOCAL_IMAGE=./rhel-8.2-x86_64-kvm.qcow2
export REG_BASE_URL=https://satellite.localdomain/pulp/repos
export REG_SAT_URL=http://satellite.localdomain
export REG_SERVER_URL=satellite.localdomain
export REG_METHOD=satellite
export REG_USER="admin"
export REG_PASSWORD="****"
export DIB_BLOCK_DEVICE_CONFIG='''
- local_loop:
   name: image0
- partitioning:
   base: image0
   label: gpt
   partitions:
     - name: boot
       flags: [ boot ]
       size: 1G
       mkfs:
         type: ext2
         mount:
           mount_point: /boot
           fstab:
             options: "defaults"
             fsck-passno: 1
     - name: root
       flags: [ primary ]
       size: 5206G
       mkfs:
          type: xfs
          mount:
            mount_point: /
            fstab:
              options: "defaults"
              fsck-passno: 1
'''