Update metadata in setup.cfg

we are using some "aliases" that the setuptools docs say 
"are supported for compatibility reasons" but their use is not advised[1].

[1] https://setuptools.pypa.io/en/latest/userguide/declarative_config.html#metadata

maintaining setup.cfg as per other repos[2]

[2] https://review.opendev.org/c/openstack/cinder-specs/+/822918

example : https://github.com/pypa/virtualenv/blob/main/setup.cfg

Change-Id: I992fc9c81a08474a04373ad1bfd710988517f0b8
1 file changed