setup.cfg: Replace dashes by underscores
setup.cfg: Replace dashes by underscores

Since setuptools v54.1.0[1], the parmeters with dash have been
deprecated in favor of the new parameters with underscore.

This change updates the parameters accordingly to avoid the warnings
like the example below.

  UserWarning: Usage of dash-separated 'description-file' will not be
  supported in future versions. Please use the underscore name
  'description_file' instead

[1] https://github.com/pypa/setuptools/commit/a2e9ae4cb

Change-Id: I802b0e4b017d8a9b7501ee1bcfaa444a08aeea1b

openstack/zaqar-ui,openstack/zaqar-ui,openstack/zaqar-ui,openstack/zaqar-ui