Fix up warnings in output of tox
This change fixes the use of certain keywords in the setup.cfg
file. Substitutes '-' for '_'
Fixes:
[metadata]
name = bandit
summary = Security oriented static analyser for python code.
-description-file =
+description_file =
README.rst
author = PyCQA
-author-email = code-quality@python.org
-home-page = https://bandit.readthedocs.io/en/latest/
+author_email = code-quality@python.org
+home_page = https://bandit.readthedocs.io/en/latest/
license = Apache-2.0 license
classifier =
Development Status :: 5 - Production/Stable
