Comment 7 for bug 1801657

Reviewed: https://review.openstack.org/606792
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-nspawn_container_create/commit/?id=f60148b767eeed6ed8fe81d9f716a815c99333d7
Submitter: Zuul
Branch: master

commit f60148b767eeed6ed8fe81d9f716a815c99333d7
Author: huang.zhiping <huang.zhiping@99cloud.net>
Date: Sun Sep 30 07:37:51 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: I745314975cf50bc92bd0993f4a9738f37cbdf3ab
    Closes-Bug: #1801657