* remove-debian9-support
* Add six module into openstack-cleanup/requirements.txt (#10099)
To fix tf-elastx_cleanup job which was failed with the following error:
File "/usr/local/lib/python3.11/site-packages/keystoneauth1/identity/generic/password.py", line 16, in <module>
from keystoneauth1.identity import v3
File "/usr/local/lib/python3.11/site-packages/keystoneauth1/identity/v3/__init__.py", line 27, in <module>
from keystoneauth1.identity.v3.oauth2_mtls_client_credential import * # noqa
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/keystoneauth1/identity/v3/oauth2_mtls_client_credential.py", line 17, in <module>
import six
ModuleNotFoundError: No module named 'six'
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Co-authored-by: Kenichi Omichi <ken1ohmichi@gmail.com>