Use of old thread module in a unit test

[Joel Capitao]

At RDO we are hitting an issue while building the package [1] for Ussuri.
The issue happens while running the unit tests in %check step.
Below the error:
AttributeError: module 'ovsdbapp.api' has no attribute 'thread'

We have eventlet in our buildroot, so we run [2]. In tox, as eventlet is absent, we don't hit the issue.

We think the unit test has not been updated during this commit [3].

We will disable unit test execution on our side until this is fixed.

[1] https://logserver.rdoproject.org/33/26333/1/check/DLRN-rpmbuild-centos8/6e3e5b3/job-output.txt
[2] https://github.com/openstack/ovsdbapp/blob/aadf1624ef9f8c8b92601ccb973775f508f7f11c/ovsdbapp/tests/unit/test_api.py#L46
[3] https://github.com/openstack/ovsdbapp/commit/7ced5efa150dab2edf96dbe9c5d57956f030d96e

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/743001
Committed: https://git.openstack.org/cgit/openstack/ovsdbapp/commit/?id=48ee1008f59eed95cbca7a8b1b3630ddbffdaae5
Submitter: Zuul
Branch: master

commit 48ee1008f59eed95cbca7a8b1b3630ddbffdaae5
Author: Terry Wilson <email address hidden>
Date: Fri Jul 24 16:42:17 2020 -0500

    Fix thread/threading change in unit test

    This unit test was not updated when the thread/threading name
    change happened. This fixes the unit test when eventlet is
    installed.

    Change-Id: I0e0da83187190c7145bb01f77daf22a43868115c
    Closes-bug: #1875678