Make a few cleanups:
- Remove obsolete sections from setup.cfg
- Remove install_command from tox.ini
- Update to current hacking version; fix warning found
- Remove unused requirements, update to newer versions for python3
Change-Id: I27fa5ef5cb23650e5210f714ce0c3dccdc564e8b
Instead of pointing to openstack.org, the homepage has been
changed to point to the homepage of freezerwq-specs.
Change-Id: I8f512a10b7985ab6c7d514e56421ad6172f8fb65
Andreas Jaeger