Make a few cleanups:
- Remove obsolete sections from setup.cfg
- Remove install_command from tox.ini, merge constraints
into dependencies
- Enable warnings for doc build, fix all warnings
Change-Id: I3814f1a89882d0d86b621425dc9ff08f5c6b5d41
The commands used by constraints need at least tox 2.0. Update to
reflect reality, which should help with local running of constraints
targets.
Change-Id: I04b8f87cc715927c85b20de18fd46e65ed9eefdc
We want to default to running all tox environments under python 3, so
set the basepython value in each environment.
We do not want to specify a minor version number, because we do not
want to have to update the file every time we upgrade python.
We do not want to set the override once in testenv, because that
breaks the more specific versions used in default environments like
py35 and py36.
Change-Id: I9608c27ff4a9ab12bdc359946edb15b58f7ea621
ZhongShengping