[nsxv][scale] Unexpected API Error on boot_and_delete_server_with_secgroups

fuel: 570
nsxv: scale lab version commit id 65e61e75809edec8b059436b31006a3db24b6e21

Traceback (most recent call last): File "/opt/stack/.venv/lib/python2.7/site-packages/rally/task/runner.py", line 64, in _run_scenario_once getattr(scenario_inst, method_name)(**kwargs) File "/opt/stack/.venv/lib/python2.7/site-packages/rally/plugins/openstack/scenarios/nova/security_group.py", line 130, in boot_and_delete_server_with_secgroups security_group_count) File "/opt/stack/.venv/lib/python2.7/site-packages/rally/plugins/openstack/scenarios/nova/utils.py", line 793, in _create_security_groups sg_name) File "/opt/stack/.venv/lib/python2.7/site-packages/novaclient/v2/security_groups.py", line 59, in create return self._create('/os-security-groups', body, 'security_group') File "/opt/stack/.venv/lib/python2.7/site-packages/novaclient/base.py", line 333, in _create resp, body = self.api.client.post(url, body=body) File "/opt/stack/.venv/lib/python2.7/site-packages/novaclient/client.py", line 461, in post return self._cs_request(url, 'POST', **kwargs) File "/opt/stack/.venv/lib/python2.7/site-packages/novaclient/client.py", line 436, in _cs_request resp, body = self._time_request(url, method, **kwargs) File "/opt/stack/.venv/lib/python2.7/site-packages/novaclient/client.py", line 409, in _time_request resp, body = self.request(url, method, **kwargs) File "/opt/stack/.venv/lib/python2.7/site-packages/novaclient/client.py", line 403, in request raise exceptions.from_response(resp, body, url, method) ClientException: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible. <class 'keystoneclient.exceptions.RequestTimeout'> (HTTP 500) (Request-ID: req-119ae42d-3da6-4ce1-b25d-cf578e098be3)