tree 57c2721aa7920d984a7f36f86b70f1753d2bfef0
parent 11277a8bee2b0ee0688ed32cc0e836872c24ee4b
author qingszhao <zhao.daqing@99cloud.net> 1528782719 +0800
committer qingszhao <zhao.daqing@99cloud.net> 1528782765 +0800

fix tox python3 overrides

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: Ib91d3237d30e75b3c31ce0f90ddfb1288dfd97b4