While testing the neutron tempest plugin from master. https://review.rdoproject.org/r/c/testproject/+/40260

on wallaby job: https://logserver.rdoproject.org/73/40273/1/check/distgit-tripleo-ci-centos-9-standalone-full-tempest-scenario-wallaby/ae50963/job-output.txt

we are seeing this
```
TASK [os_tempest : List tempest tests] *****************************************
2022-03-09 22:37:06.175551 | primary | Wednesday 09 March 2022  22:37:06 -0500 (0:00:02.226)       0:31:37.348 *******
2022-03-09 22:37:10.619152 | primary | fatal: [undercloud]: FAILED! => {"changed": false, "cmd": "set -e\nif [ -d /openstack/venvs/tempest-untagged/bin ];\nthen\n  . /openstack/venvs/tempest-untagged/bin/activate\nfi\ntempest run -l\n", "delta": "0:00:03.014071", "end": "2022-03-10 03:37:10.395057", "msg": "non-zero return code", "rc": 100, "start": "2022-03-10 03:37:07.380986", "stderr": "", "stderr_lines": [], "stdout": "\n=========================\nFailures during discovery\n=========================\n--- import errors ---\nFailed to import test module: neutron_tempest_plugin.api.test_qos\nTraceback (most recent call last):\n  File \"/usr/lib64/python3.9/unittest/loader.py\", line 436, in _find_test_path\n    module = self._get_module_from_name(name)\n  File \"/usr/lib64/python3.9/unittest/loader.py\", line 377, in _get_module_from_name\n    __import__(name)\n  File \"/usr/lib/python3.9/site-packages/neutron_tempest_plugin/api/test_qos.py\", line 1401, in <module>\n    class QosMinimumPpsRuleTestJSON(base.BaseAdminNetworkTest):\n  File \"/usr/lib/python3.9/site-packages/neutron_tempest_plugin/api/test_qos.py\", line 1402, in QosMinimumPpsRuleTestJSON\n    RULE_NAME = qos_consts.RULE_TYPE_MINIMUM_PACKET_RATE + \"_rule\"\nAttributeError: module 'neutron_lib.services.qos.constants' has no attribute 'RULE_TYPE_MINIMUM_PACKET_RATE'\n\n================================================================================\nThe above traceback was encountered during test discovery which imports all the found test modules in the specified test_path.", "stdout_lines": ["", "=========================", "Failures during discovery", "=========================", "--- import errors ---", "Failed to import test module: neutron_tempest_plugin.api.test_qos", "Traceback (most recent call last):", "  File \"/usr/lib64/python3.9/unittest/loader.py\", line 436, in _find_test_path", "    module = self._get_module_from_name(name)", "  File \"/usr/lib64/python3.9/unittest/loader.py\", line 377, in _get_module_from_name", "    __import__(name)", "  File \"/usr/lib/python3.9/site-packages/neutron_tempest_plugin/api/test_qos.py\", line 1401, in <module>", "    class QosMinimumPpsRuleTestJSON(base.BaseAdminNetworkTest):", "  File \"/usr/lib/python3.9/site-packages/neutron_tempest_plugin/api/test_qos.py\", line 1402, in QosMinimumPpsRuleTestJSON", "    RULE_NAME = qos_consts.RULE_TYPE_MINIMUM_PACKET_RATE + \"_rule\"", "AttributeError: module 'neutron_lib.services.qos.constants' has no attribute 'RULE_TYPE_MINIMUM_PACKET_RATE'", "", "================================================================================", "The above traceback was encountered during test discovery which imports all the found test modules in the specified test_path."]}
```