The test case for 'rbac_policy_quota' execution reports an error.

[liwenjian]

When we execute the test case 'test_rbac_policy_quota' in neutron_tempest_plugin.api.admin.test_shared_network_extension.RBACSharedNetworksTest, the program throws an exception.

* Step-by-step reproduction steps:
Setup neutron-tempest-plugin
Running the test

(rally)[root@ci /]$ python -m testtools.run neutron_tempest_plugin.api.admin.test_shared_network_extension.RBACSharedNetworksTest.test_rbac_policy_quota

Traceback (most recent call last):
  File "/var/lib/kolla/venv/lib/python3.6/site-packages/tempest/common/utils/__init__.py", line 89, in wrapper
    return func(*func_args, **func_kwargs)
  File "/var/lib/kolla/venv/lib/python3.6/site-packages/neutron_tempest_plugin/api/admin/test_shared_network_extension.py", line 378, in test_rbac_policy_quota
    self.assertGreater(max_policies, 0)
  File "/usr/lib64/python3.6/unittest/case.py", line 1238, in assertGreater
    self.fail(self._formatMessage(msg, standardMsg))
  File "/usr/lib64/python3.6/unittest/case.py", line 687, in fail
    raise self.failureException(msg)
AssertionError: -1 not greater than 0Ran 1 test in 12.500s
FAILED (failures=1)

It seems that the setting of the RBAC policy quota caused the exception. When the quota is set to -1 by default, the program fails in the judgment.
https://opendev.org/openstack/neutron-tempest-plugin/src/commit/14f44a0c29e3fed721313848f0f3dea2cd023dda/neutron_tempest_plugin/api/admin/test_shared_network_extension.py#L375

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

Patch: https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/904106