Comment 9 for bug 1853372

Reviewed: https://review.opendev.org/701572
Committed: https://git.openstack.org/cgit/openstack/cinderlib/commit/?id=08108b59643698c69ba26298b664ea4f31a7c174
Submitter: Zuul
Branch: master

commit 08108b59643698c69ba26298b664ea4f31a7c174
Author: Luigi Toscano <email address hidden>
Date: Fri Jan 10 15:03:23 2020 +0100

    Use Python 3 by default and drop Python 2

    Follow the rest of OpenStack and consistently switch to
    python3 as default python interpreter and drop python2.

    The "functional" tox target was failing with Python 2
    as cinder/master has cut the Python 2.7 compatibility.
    "functional" now points to the default python3. An explicit
    "functional-py37" target has been added as well.

    Fix the functional jobs as well:
    - move the LVM job to centos-8 and adapt it when needed;
    - move the Ceph job to ubuntu-bionic, as there are no
      CentOS 8 Ceph packages (and the CentOS 7 ones do not
      provide Python 3 bindings).

    Closes-Bug: #1853372
    Change-Id: Iea4f4f53df7400248848399494564910d3870f63