This repo is now testing only with Python 3, so let's make
a few cleanups:
- Remove python 2.7 stanza from setup.py
- Add requires on python >= 3.6 to setup.cfg so that pypi and pip
know about the requirement
- Remove obsolete sections from setup.cfg
- Update classifiers
- Update requirements, no need for python_version anymore
- Switch to using sphinx-build with warnings enabled, fix
warnings found with autodoc
- Cleanup doc/source/conf.py to remove now obsolete content.
- Use newer openstackdocstheme version, switch to using apidoc
- Remove install_command from tox.ini, the default is fine
- Change some imports to use python3 changed names
Change-Id: Ibb2e614c7db8a01e41caed8314c1d46479c78295
setup_requires flag in setup method in setuptools requires version
of the package(s) set as dependency, so pbr>=1.8 added
Change-Id: I82e504f8d029348c5a58d5352ae56dae64b78771
Andreas Jaeger