...per Ussuri Communtiy-wide goal:
https://governance.openstack.org/tc/goals/selected/ussuri/drop-py27.html
At the same time, set ignore_basepython_conflict
Automatic envs (pyXX) will only use the python version appropriate to
that env and ignore basepython inherited from [testenv] if we set
ignore_basepython_conflict.
Change-Id: I5ab48fe70e49d104290f1c01014e4aa6420e300f
126 B
126 B