Comment 0 for bug 1962406

It turned out the following change causes regression and now oslo-config-genrator command always fails whne oslo.limit entrypoint is added to its config file.

https://review.opendev.org/c/openstack/oslo.limit/+/813540

~~~
Traceback (most recent call last):
  File "/home/tkajinam/git/openstack/nova/.tox/shared/bin/oslo-config-generator", line 8, in <module>
    sys.exit(main())
  File "/home/tkajinam/git/openstack/nova/.tox/shared/lib/python3.8/site-packages/oslo_config/generator.py", line 836, in main
    generate(conf)
  File "/home/tkajinam/git/openstack/nova/.tox/shared/lib/python3.8/site-packages/oslo_config/generator.py", line 797, in generate
    groups = _get_groups(_list_opts(conf.namespace))
  File "/home/tkajinam/git/openstack/nova/.tox/shared/lib/python3.8/site-packages/oslo_config/generator.py", line 537, in _list_opts
    for group, group_opts in loader():
ValueError: too many values to unpack (expected 2)
~~~