Comment 6 for bug 1802032

Reviewed: https://review.openstack.org/608223
Committed: https://git.openstack.org/cgit/openstack/stx-metal/commit/?id=90cb458f7e3220e258e3e5256b627feca20461d6
Submitter: Zuul
Branch: master

commit 90cb458f7e3220e258e3e5256b627feca20461d6
Author: 98k <18552437190@163.com>
Date: Fri Oct 5 10:53:59 2018 +0000

    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: I1bd6a3aebbbe539d4f21ca71c76d92e3c325c1e8
    Closes-Bug: #1802032