Comment 3 for bug 1921679

https://logserver.rdoproject.org/69/781069/2/openstack-check/tripleo-ci-centos-8-ovb-3ctlr_1comp_1supp-featureset039/368a301/logs/undercloud/home/zuul/undercloud_install.log.txt.gz

It might be related to the same issue
```
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/stevedore/_cache.py", line 159, in _get_data_for_path
    with open(filename, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/home/zuul/.cache/python-entrypoints/c9ec26dbebd9eb84e915ddfbe88b919d10a8377885ca0efefcf347dfad5449dd'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/openstack", line 6, in <module>
    from openstackclient.shell import main
  File "/usr/lib/python3.6/site-packages/openstackclient/shell.py", line 26, in <module>
    from openstackclient.common import clientmanager
  File "/usr/lib/python3.6/site-packages/openstackclient/common/clientmanager.py", line 196, in <module>
    'openstack.cli.base',
  File "/usr/lib/python3.6/site-packages/openstackclient/common/clientmanager.py", line 147, in get_plugin_modules
    mgr = stevedore.ExtensionManager(group)
  File "/usr/lib/python3.6/site-packages/stevedore/extension.py", line 136, in __init__
    verify_requirements)
  File "/usr/lib/python3.6/site-packages/stevedore/extension.py", line 218, in _load_plugins
    for ep in self.list_entry_points():
  File "/usr/lib/python3.6/site-packages/stevedore/extension.py", line 207, in list_entry_points
    eps = list(_cache.get_group_all(self.namespace))
  File "/usr/lib/python3.6/site-packages/stevedore/_cache.py", line 179, in get_group_all
    data = self._get_data_for_path(path)
  File "/usr/lib/python3.6/site-packages/stevedore/_cache.py", line 162, in _get_data_for_path
    data = _build_cacheable_data(path)
  File "/usr/lib/python3.6/site-packages/stevedore/_cache.py", line 107, in _build_cacheable_data
    real_groups = importlib_metadata.entry_points()
  File "/usr/local/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 893, in entry_points
    return SelectableGroups.load(eps).select(**params)
  File "/usr/local/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 331, in load
    ordered = sorted(eps, key=by_group)
  File "/usr/local/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 891, in <genexpr>
    dist.entry_points for dist in unique(distributions())
  File "/usr/local/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 517, in entry_points
    return EntryPoints._from_text_for(self.read_text('entry_points.txt'), self)
  File "/usr/local/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 244, in _from_text_for
    return cls(ep._for(dist) for ep in cls._from_text(text))
  File "/usr/local/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 244, in <genexpr>
    return cls(ep._for(dist) for ep in cls._from_text(text))
  File "/usr/local/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 255, in <genexpr>
    for name, value in values
ValueError: not enough values to unpack (expected 2, got 1)

```