Comment 6 for bug 1903508

also impacting victoria - seen in periodic-tripleo-ci-centos-8-standalone-on-multinode-ipa-victoria from last night's run:

        * https://logserver.rdoproject.org/openstack-periodic-integration-stable1/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-8-standalone-on-multinode-ipa-victoria/98642ec/logs/undercloud/var/log/tempest/stestr_results.html.gz
        * tempest.exceptions.BuildErrorException: Server 133a0a31-40ee-4426-816f-55169e45ffa3 failed to build and is in ERROR status
Details: {'code': 500, 'created': '2020-11-12T23:50:15Z', 'message': 'Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance 133a0a31-40ee-4426-816f-55169e45ffa3.'}
        * https://logserver.rdoproject.org/openstack-periodic-integration-stable1/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-8-standalone-on-multinode-ipa-victoria/98642ec/logs/undercloud/var/log/containers/nova/nova-compute.log.txt.gz
        * : libvirt.libvirtError: internal error: process exited while connecting to monitor: 2020-11-12T23:49:32.637750Z qemu-kvm: -object tls-creds-x509,id=vnc-tls-creds0,dir=/etc/pki/libvirt-vnc,endpoint=server,verify-peer=yes: Cannot load certificate '/etc/pki/libvirt-vnc/server-cert.pem' & key '/etc/pki/libvirt-vnc/server-key.pem': Error while reading file.

so this is also victoria promotion blocker