test_create_ebs_image_and_check_boot fails in gate on wrong volume status

[Ihar Hrachyshka]

traceback-1: {{{
Traceback (most recent call last):
  File "tempest/common/waiters.py", line 111, in wait_for_server_termination
    raise exceptions.BuildErrorException(server_id=server_id)
tempest.exceptions.BuildErrorException: Server b676e60a-609a-4155-bd51-3279c1f08a2d failed to build and is in ERROR status
}}}

traceback-2: {{{
Traceback (most recent call last):
  File "tempest/lib/common/utils/test_utils.py", line 84, in call_and_ignore_notfound_exc
    return func(*args, **kwargs)
  File "tempest/services/volume/base/base_volumes_client.py", line 89, in delete_volume
    resp, body = self.delete("volumes/%s" % volume_id)
  File "tempest/lib/common/rest_client.py", line 307, in delete
    return self.request('DELETE', url, extra_headers, headers, body)
  File "tempest/lib/common/rest_client.py", line 665, in request
    resp, resp_body)
  File "tempest/lib/common/rest_client.py", line 768, in _error_checker
    raise exceptions.BadRequest(resp_body, resp=resp)
tempest.lib.exceptions.BadRequest: Bad request
Details: {u'message': u'Invalid volume: Volume status must be available or error or error_restoring or error_extending or error_managing and must not be migrating, attached, belong to a group or have snapshots.', u'code': 400}
}}}

Traceback (most recent call last):
  File "tempest/test.py", line 107, in wrapper
    return f(self, *func_args, **func_kwargs)
  File "tempest/scenario/test_volume_boot_pattern.py", line 181, in test_create_ebs_image_and_check_boot
    self._delete_server(instance)
  File "tempest/scenario/test_volume_boot_pattern.py", line 98, in _delete_server
    waiters.wait_for_server_termination(self.servers_client, server['id'])
  File "tempest/common/waiters.py", line 111, in wait_for_server_termination
    raise exceptions.BuildErrorException(server_id=server_id)
tempest.exceptions.BuildErrorException: Server b676e60a-609a-4155-bd51-3279c1f08a2d failed to build and is in ERROR status

Example: http://logs.openstack.org/01/385901/1/check/gate-tempest-dsvm-neutron-dvr-ubuntu-xenial/177b772/logs/testr_results.html.gz

Seems like it plague the gate. I see 257 hits of message:"in test_create_ebs_image_and_check_boot" in last 7 days.