[devstack-tobiko-neutron] stable/2023.1 periodic failing stateless secgroup tests

[yatin]

One of the test fails like:-
testtools.testresult.real._StringException: Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/x/tobiko/tobiko/tests/scenario/neutron/test_security_groups.py", line 227, in test_security_group_stateful_to_stateless_switch
    self._check_sg_rules_in_ovn_nb_db(sg, neutron.STATELESS_OVN_ACTION)
  File "/home/zuul/src/opendev.org/x/tobiko/tobiko/tests/scenario/neutron/test_security_groups.py", line 139, in _check_sg_rules_in_ovn_nb_db
    self._check_sg_rule_in_ovn_nb_db(sg_rule_id, expected_action)
  File "/home/zuul/src/opendev.org/x/tobiko/tobiko/tests/scenario/neutron/test_security_groups.py", line 127, in _check_sg_rule_in_ovn_nb_db
    self._assert_acl_action(acl_rule, expected_action)
  File "/home/zuul/src/opendev.org/x/tobiko/tobiko/tests/scenario/neutron/test_security_groups.py", line 131, in _assert_acl_action
    self.assertEqual(
  File "/home/zuul/src/opendev.org/x/tobiko/.tox/py3/lib/python3.8/site-packages/testtools/testcase.py", line 393, in assertEqual
    self.assertThat(observed, matcher, message)
  File "/home/zuul/src/opendev.org/x/tobiko/.tox/py3/lib/python3.8/site-packages/testtools/testcase.py", line 480, in assertThat
    raise mismatch_error
testtools.matchers._impl.MismatchError: 'allow-stateless' != 'allow-related'

Example failure:- https://606e7073949a555d6ce7-a5a94d16cd1e63fdf610099df3afaf88.ssl.cf5.rackcdn.com/periodic/opendev.org/openstack/neutron/stable/2023.1/devstack-tobiko-neutron/e20c66f/tobiko_results_02_create_neutron_resources_neutron.html?sort=result

Builds:- https://zuul.openstack.org/builds?job_name=devstack-tobiko-neutron&project=openstack%2Fneutron&branch=stable%2F2023.1&skip=0

Issue triggered with hhttps://review.opendev.org/c/x/devstack-plugin-tobiko/+/912588 which enabled those tests. 2023.1 jobs running with ubuntu-focal.

[Slawek Kaplonski (slaweq)]

proposed fix in tobiko's job definiton https://review.opendev.org/c/x/devstack-plugin-tobiko/+/914884