Comment 2 for bug 1801657

Reviewed: https://review.openstack.org/606769
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-plugins/commit/?id=2ebc891885bf87e0a7a33382db53a3a8bcc53e48
Submitter: Zuul
Branch: master

commit 2ebc891885bf87e0a7a33382db53a3a8bcc53e48
Author: huang.zhiping <huang.zhiping@99cloud.net>
Date: Sun Sep 30 03:13:56 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: I426af536281d4ea0c862c1415c89a365db9940b7
    Closes-Bug: #1801657