Deploying IBM PowerPC node fails with Red Hat OpenStack Platform 13 - 15

Issue

Deploying IBM PowerPC node fails with Red Hat OpenStack Platform 13 - 15

Error message in Red Hat OpenStack Platform 13 and 14

fatal: [overcloud-novacomputeppc64lep9-0]: FAILED! => {
    "failed_when_result": true, 
    "outputs.stdout_lines | default([]) | union(outputs.stderr_lines | default([]))": [
        "Error running ['docker', 'run', '--name', 'nova_cell_v2_discover_hosts', '--label', 'config_id=tripleo_step5', '--label', 'container_name=nova_cell_v2_discover_hosts', '--label', 'managed_by=paunch', '--label', 'config_data={\"start_order\": 0, \"image\": \"brew-pulp-docker01.web.prod.ext.phx2.redhat.com:8888/rhosp14/openstack-nova-compute:14.0-117\", \"environment\": [\"TRIPLEO_DEPLOY_IDENTIFIER=1561432771\"], \"command\": \"/usr/bin/bootstrap_host_exec nova_compute su nova -s /bin/bash -c \\'/docker-config-scripts/nova_cell_v2_discover_hosts.py\\'\", \"user\": \"root\", \"volumes\": [\"/etc/hosts:/etc/hosts:ro\", \"/etc/localtime:/etc/localtime:ro\", \"/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro\", \"/etc/pki/ca-trust/source/anchors:/etc/pki/ca-trust/source/anchors:ro\", \"/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/certs/ca-bundle.crt:ro\", \"/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro\", \"/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro\", \"/dev/log:/dev/log\", \"/etc/ssh/ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro\", \"/etc/puppet:/etc/puppet:ro\", \"/var/lib/config-data/nova_libvirt/etc/my.cnf.d/:/etc/my.cnf.d/:ro\", \"/var/lib/config-data/nova_libvirt/etc/nova/:/etc/nova/:ro\", \"/var/log/containers/nova:/var/log/nova\", \"/var/lib/docker-config-scripts/:/docker-config-scripts/\"], \"net\": \"host\", \"detach\": false}', '--env=TRIPLEO_DEPLOY_IDENTIFIER=1561432771', '--net=host', '--user=root', '--volume=/etc/hosts:/etc/hosts:ro', '--volume=/etc/localtime:/etc/localtime:ro', '--volume=/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro', '--volume=/etc/pki/ca-trust/source/anchors:/etc/pki/ca-trust/source/anchors:ro', '--volume=/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/certs/ca-bundle.crt:ro', '--volume=/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro', '--volume=/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro', '--volume=/dev/log:/dev/log', '--volume=/etc/ssh/ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro', '--volume=/etc/puppet:/etc/puppet:ro', '--volume=/var/lib/config-data/nova_libvirt/etc/my.cnf.d/:/etc/my.cnf.d/:ro', '--volume=/var/lib/config-data/nova_libvirt/etc/nova/:/etc/nova/:ro', '--volume=/var/log/containers/nova:/var/log/nova', '--volume=/var/lib/docker-config-scripts/:/docker-config-scripts/', 'brew-pulp-docker01.web.prod.ext.phx2.redhat.com:8888/rhosp14/openstack-nova-compute:14.0-117', '/usr/bin/bootstrap_host_exec', 'nova_compute', 'su', 'nova', '-s', '/bin/bash', '-c', \"'/docker-config-scripts/nova_cell_v2_discover_hosts.py'\"]. [1]", 
        "", 
        "stdout: ", 
        "stderr: su: cannot open session: Permission denied"
    ]
}

Error message in Red Hat OpenStack Platform 15

fatal: [overcloud-novacomputeppc64le-0]: FAILED! => {
    "failed_when_result": true,
    "outputs.stdout_lines | default([]) | union(outputs.stderr_lines | default([]))": [
        "Error running ['podman', 'run', '--name', 'nova_cell_v2_discover_hosts', '--label', 'config_id=tripleo_step5', '--label', 'container_name=nova_cell_v2_discover_hosts', '--label', 'managed_by=paunch', '--label', 'config_data={\"command\": \"/usr/bin/bootstrap_host_exec nova_compute su nova -s /bin/bash -c \\'/container-config-scripts/pyshim.sh /container-config-scripts/nova_cell_v2_discover_hosts.py\\'\", \"detach\": false, \"environment\": [\"TRIPLEO_DEPLOY_IDENTIFIER=1557430479\", \"__OS_DEBUG=true\"], \"image\": \"brew-pulp-docker01.web.prod.ext.phx2.redhat.com:8888/rhosp15/openstack-nova-compute:15.0\", \"net\": \"host\", \"start_order\": 0, \"user\": \"root\", \"volumes\": [\"/etc/hosts:/etc/hosts:ro\", \"/etc/localtime:/etc/localtime:ro\", \"/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro\", \"/etc/pki/ca-trust/source/anchors:/etc/pki/ca-trust/source/anchors:ro\", \"/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/certs/ca-bundle.crt:ro\", \"/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro\", \"/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro\", \"/dev/log:/dev/log\", \"/etc/ssh/ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro\", \"/etc/puppet:/etc/puppet:ro\", \"/var/lib/config-data/nova_libvirt/etc/my.cnf.d/:/etc/my.cnf.d/:ro\", \"/var/lib/config-data/nova_libvirt/etc/nova/:/etc/nova/:ro\", \"/var/log/containers/nova:/var/log/nova\", \"/var/lib/container-config-scripts/:/container-config-scripts/\"]}', '--conmon-pidfile=/var/run/nova_cell_v2_discover_hosts.pid', '--log-driver', 'json-file', '--log-opt', 'path=/var/log/containers/stdouts/nova_cell_v2_discover_hosts.log', '--env=TRIPLEO_DEPLOY_IDENTIFIER=1557430479', '--env=__OS_DEBUG=true', '--net=host', '--user=root', '--volume=/etc/hosts:/etc/hosts:ro', '--volume=/etc/localtime:/etc/localtime:ro', '--volume=/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro', '--volume=/etc/pki/ca-trust/source/anchors:/etc/pki/ca-trust/source/anchors:ro', '--volume=/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/certs/ca-bundle.crt:ro', '--volume=/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro', '--volume=/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro', '--volume=/dev/log:/dev/log', '--volume=/etc/ssh/ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro', '--volume=/etc/puppet:/etc/puppet:ro', '--volume=/var/lib/config-data/nova_libvirt/etc/my.cnf.d/:/etc/my.cnf.d/:ro', '--volume=/var/lib/config-data/nova_libvirt/etc/nova/:/etc/nova/:ro', '--volume=/var/log/containers/nova:/var/log/nova', '--volume=/var/lib/container-config-scripts/:/container-config-scripts/', 'brew-pulp-docker01.web.prod.ext.phx2.redhat.com:8888/rhosp15/openstack-nova-compute:15.0', '/usr/bin/bootstrap_host_exec', 'nova_compute', 'su', 'nova', '-s', '/bin/bash', '-c', \"'/container-config-scripts/pyshim.sh\", \"/container-config-scripts/nova_cell_v2_discover_hosts.py'\"]. [1]",
        "",
        "stdout: ",
        "stderr: su: cannot open session: Permission denied"
    ]
}