cs9 fs35 master is failing on tempest tests with error 'tempest.exceptions.BuildErrorException: Server failed to build and is in ERROR status'

periodic-tripleo-ci-centos-9-ovb-3ctlr_1comp-featureset035-master is failing on tempest tests with error 'tempest.exceptions.BuildErrorException: Server failed to build and is in ERROR status'

Following is the traceback observed:-

1. tempest.scenario.test_network_basic_ops.TestNetworkBasicOps.test_hotplug_nic[compute,id-c5adff73-e961-41f1-b4a9-343614f18cfa,network]

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/tempest/common/utils/__init__.py", line 70, in wrapper
    return f(*func_args, **func_kwargs)
  File "/usr/lib/python3.9/site-packages/tempest/scenario/test_network_basic_ops.py", line 534, in test_hotplug_nic
    self._setup_network_and_servers()
  File "/usr/lib/python3.9/site-packages/tempest/scenario/test_network_basic_ops.py", line 120, in _setup_network_and_servers
    server = self._create_server(self.network, port_id)
  File "/usr/lib/python3.9/site-packages/tempest/scenario/test_network_basic_ops.py", line 169, in _create_server
    server = self.create_server(
  File "/usr/lib/python3.9/site-packages/tempest/scenario/manager.py", line 309, in create_server
    body, _ = compute.create_test_server(
  File "/usr/lib/python3.9/site-packages/tempest/common/compute.py", line 353, in create_test_server
    LOG.exception('Server %s failed to delete in time',
  File "/usr/lib/python3.9/site-packages/oslo_utils/excutils.py", line 227, in __exit__
    self.force_reraise()
  File "/usr/lib/python3.9/site-packages/oslo_utils/excutils.py", line 200, in force_reraise
    raise self.value
  File "/usr/lib/python3.9/site-packages/tempest/common/compute.py", line 319, in create_test_server
    waiters.wait_for_server_status(
  File "/usr/lib/python3.9/site-packages/tempest/common/waiters.py", line 81, in wait_for_server_status
    raise exceptions.BuildErrorException(details, server_id=server_id)
tempest.exceptions.BuildErrorException: Server c3c49352-be8e-4b8b-a76f-434cbfa0616a failed to build and is in ERROR status
Details: Fault: {'code': 500, 'created': '2022-07-12T03:37:16Z', 'message': 'Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance c3c49352-be8e-4b8b-a76f-434cbfa0616a.'}. Server boot request ID: req-2b2488a6-8b19-46e9-bb51-ebb9be92e89e.

2. tempest.api.compute.images.test_images.ImagesTestJSON.test_create_image_from_stopped_server[id-aaacd1d0-55a2-4ce8-818a-b5439df8adc9]

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/tempest/api/compute/images/test_images.py", line 83, in test_create_image_from_stopped_server
    waiters.wait_for_server_status(self.servers_client,
  File "/usr/lib/python3.9/site-packages/tempest/common/waiters.py", line 67, in wait_for_server_status
    body = client.show_server(server_id)['server']
  File "/usr/lib/python3.9/site-packages/tempest/lib/services/compute/servers_client.py", line 157, in show_server
    resp, body = self.get("servers/%s" % server_id)
  File "/usr/lib/python3.9/site-packages/tempest/lib/common/rest_client.py", line 314, in get
    return self.request('GET', url, extra_headers, headers)
  File "/usr/lib/python3.9/site-packages/tempest/lib/services/compute/base_compute_client.py", line 47, in request
    resp, resp_body = super(BaseComputeClient, self).request(
  File "/usr/lib/python3.9/site-packages/tempest/lib/common/rest_client.py", line 720, in request
    self._error_checker(resp, resp_body)
  File "/usr/lib/python3.9/site-packages/tempest/lib/common/rest_client.py", line 896, in _error_checker
    raise exceptions.ServerFault(resp_body, resp=resp,
tempest.lib.exceptions.ServerFault: Got server fault
Details: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'oslo_db.exception.DBConnectionError'>

For more details please refer following links:-
1. https://logserver.rdoproject.org/openstack-periodic-integration-main/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-9-ovb-3ctlr_1comp-featureset035-master/f44e204/logs/undercloud/var/log/tempest/stestr_results.html.gz
2. https://logserver.rdoproject.org/60/43560/4/check/periodic-tripleo-ci-centos-9-ovb-3ctlr_1comp-featureset035-master/61be28c/logs/undercloud/var/log/tempest/stestr_results.html.gz
3. https://logserver.rdoproject.org/60/43560/4/check/periodic-tripleo-ci-centos-9-ovb-3ctlr_1comp-featureset035-master/5cbf6ab/logs/undercloud/var/log/tempest/stestr_results.html.gz