Description of problem:
trying to scale-out the platform, customer is getting following error:

Deploying templates in the directory /tmp/tripleoclient-m_q6mtat/tripleo-heat-templates
Initializing overcloud plan deployment
{'deployment_status': 'DEPLOY_FAILED',
 'execution_id': '44719ced-7a76-4365-8e75-aed8262f928b',
 'message': 'Image registry.redhat.io/rhosp-rhel8/openstack-cinder-scheduler '
            'has no tag 16.1.\n'
            'Available tags: 16.1.7-9.1646285769, 16.1.5-2.1619641818, 16.1.2, '
            '16.2.0-60, 16.1.3, 16.2.3-10, 16.1.4-10, 16.1.7, 16.0-78, '
            '16.1.5-1.1618379274-source, 16.1.4-10-source, 16.1-43, 16.1.5, '
            '16.1.4, 16.1.3-6-source, 16.2.0-60.1638437527, 16.1.8-10, '
            '16.1-49, 16.1.5-1-source, 16.1.3-4-source, 16.1.8-7-source, '
            '16.1.5-2.1619641818-source, 16.1.8-9.1651483896-source, '
            '16.2.3-11, 16.1.6-7-source, 16.1.3-4, 16.1.6, 16.1.8-9-source, '
            '16.1.3-5.1611701648, 16.2.1-6-source, 16.2.0, 16.2.2-12-source, '
            '16.2.2-15, 16.2.2, 16.1.3-6.1614769698-source, 16.0-104, '
            '16.2.1-6, 16.1.3-6.1614769698, 16.2.2-10, 16.1.3-6, 16.1.6-4, '
            '16.2.2-14, 16.2.2-14-source, 16.2.2-15-source, '
            '16.2.2-12.1651565461-source, 16.2.2-12, 16.0-103, '
            '16.1.6-4-source, 16.1.3-5, 16.2.0-60.1638437527-source',
 'plan_name': 'overcloud',
 'root_execution_id': None,
 'status': 'FAILED'}
Image registry.redhat.io/rhosp-rhel8/openstack-cinder-scheduler has no tag 16.1.
Available tags: 16.1.7-9.1646285769, 16.1.5-2.1619641818, 16.1.2, 16.2.0-60, 16.1.3, 16.2.3-10, 16.1.4-10, 16.1.7, 16.0-78, 16.1.5-1.1618379274-source, 16.1.4-10-source, 16.1-43, 16.1.5, 16.1.4, 16.1.3-6-source, 16.2.0-60.1638437527, 16.1.8-10, 16.1-49, 16.1.5-1-source, 16.1.3-4-source, 16.1.8-7-source, 16.1.5-2.1619641818-source, 16.1.8-9.1651483896-source, 16.2.3-11, 16.1.6-7-source, 16.1.3-4, 16.1.6, 16.1.8-9-source, 16.1.3-5.1611701648, 16.2.1-6-source, 16.2.0, 16.2.2-12-source, 16.2.2-15, 16.2.2, 16.1.3-6.1614769698-source, 16.0-104, 16.2.1-6, 16.1.3-6.1614769698, 16.2.2-10, 16.1.3-6, 16.1.6-4, 16.2.2-14, 16.2.2-14-source, 16.2.2-15-source, 16.2.2-12.1651565461-source, 16.2.2-12, 16.0-103, 16.1.6-4-source, 16.1.3-5, 16.2.0-60.1638437527-source
Exception occured while running the command
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/tripleoclient/command.py", line 32, in run
    super(Command, self).run(parsed_args)
  File "/usr/lib/python3.6/site-packages/osc_lib/command/command.py", line 41, in run
    return super(Command, self).run(parsed_args)
  File "/usr/lib/python3.6/site-packages/cliff/command.py", line 185, in run
    return_code = self.take_action(parsed_args) or 0
  File "/usr/lib/python3.6/site-packages/tripleoclient/v1/overcloud_deploy.py", line 1041, in take_action
    self._deploy_tripleo_heat_templates_tmpdir(stack, parsed_args)
  File "/usr/lib/python3.6/site-packages/tripleoclient/v1/overcloud_deploy.py", line 415, in _deploy_tripleo_heat_templates_tmpdir
    new_tht_root, tht_root)
  File "/usr/lib/python3.6/site-packages/tripleoclient/v1/overcloud_deploy.py", line 532, in _deploy_tripleo_heat_templates
    deployment_options=deployment_options)
  File "/usr/lib/python3.6/site-packages/tripleoclient/v1/overcloud_deploy.py", line 551, in _try_overcloud_deploy_with_compat_yaml
    deployment_options=deployment_options)
  File "/usr/lib/python3.6/site-packages/tripleoclient/v1/overcloud_deploy.py", line 288, in _heat_deploy
    deployment_options=deployment_options)
  File "/usr/lib/python3.6/site-packages/tripleoclient/workflows/deployment.py", line 87, in deploy_and_wait
    deploy(log, clients, **workflow_input)
  File "/usr/lib/python3.6/site-packages/tripleoclient/workflows/deployment.py", line 69, in deploy
    % (payload['status'], wf_name))
ValueError: Unexpected status FAILED for tripleo.deployment.v1.deploy_plan
Unexpected status FAILED for tripleo.deployment.v1.deploy_plan
END return value: 1


Version-Release number of selected component (if applicable):
RHOSP 16.1.8
openstack-tripleo-common.noarch                       11.4.1-1.20211201113403.75bd92a.el8ost             @openstack-16.1-for-rhel-8-x86_64-rpms


How reproducible:


Steps to Reproduce:
1. run a deployment trying to add computes:
openstack overcloud deploy --templates /usr/share/openstack-tripleo-heat-templates/ -e /home/stack/templates/node-info.yaml -e /home/stack/containers-prepare-parameter.yaml -r /home/stack/roles_data.yaml -e /home/stack/lanzascript.yaml -n /home/stack/network_data.yaml -e /home/stack/openstack-tripleo-heat-templates-rendered/environments/network-isolation.yaml -e /home/stack/openstack-tripleo-heat-templates-rendered/environments/network-environment.yaml -e /home/stack/templates/custom-network-configuration.yaml -e /home/stack/templates/pci_passthrough_controller.yaml -e /home/stack/templates/pci_passthrough_compute.yaml -e /usr/share/openstack-tripleo-heat-templates/environments/cinder-dellemc-powerstore-config.yaml --ntp-server 192.168.30.1 -v


containers-prepare-parameter.yaml in use: 

# Generated with the following on 2020-07-29T10:18:23.925060 #
#   openstack tripleo container image prepare default --local-push-destination --output-env-file containers-prepare-parameter.yaml
#

parameter_defaults:
  ContainerImagePrepare:
  - push_destination: 192.168.30.1:8787
    set:
      ceph_alertmanager_image: ose-prometheus-alertmanager
      ceph_alertmanager_namespace: registry.redhat.io/openshift4
      ceph_alertmanager_tag: 4.1
      ceph_grafana_image: rhceph-3-dashboard-rhel7
      ceph_grafana_namespace: registry.redhat.io/rhceph
      ceph_grafana_tag: 3
      ceph_image: rhceph-4-rhel8
      ceph_namespace: registry.redhat.io/rhceph
      ceph_node_exporter_image: ose-prometheus-node-exporter
      ceph_node_exporter_namespace: registry.redhat.io/openshift4
      ceph_node_exporter_tag: v4.1
      ceph_prometheus_image: ose-prometheus
      ceph_prometheus_namespace: registry.redhat.io/openshift4
      ceph_prometheus_tag: 4.1
      ceph_tag: latest
      name_prefix: openstack-
      name_suffix: ''
      namespace: registry.redhat.io/rhosp-rhel8
      neutron_driver: ovn
      rhel_containers: false
    tag_from_label: '{version}-{release}'
  ContainerImageRegistryCredentials:
    registry.redhat.io:
      'XXXXXXX' : 'XXXXXXX'
  ContainerImageRegistryLogin: true

Actual results:
deployment failing at very early stages with error:  'message': 'Image registry.redhat.io/rhosp-rhel8/openstack-cinder-scheduler has no tag 16.1.\n'

Expected results:
deployment to succeed

Additional info:
not sure if this this could be related to BZ 2213672

[0] https://bugzilla.redhat.com/show_bug.cgi?id=2213672