Python 3.10 mock errors

[Corey Bryant]

'tox -e py310' results in several errors such as:

======================================================================
FAIL: neutron_taas.tests.unit.services.taas.test_taas_plugin.TestTaasPlugin.test_create_tap_flow
neutron_taas.tests.unit.services.taas.test_taas_plugin.TestTaasPlugin.test_create_tap_flow
----------------------------------------------------------------------
testtools.testresult.real._StringException: Traceback (most recent call last):
  File "/<<PKGBUILDDIR>>/neutron_taas/tests/unit/services/taas/test_taas_plugin.py", line 44, in setUp
    mock.patch.object(n_rpc, 'Connection', auto_spec=True).start()
  File "/usr/lib/python3.10/unittest/mock.py", line 1635, in _patch_object
    return _patch(
  File "/usr/lib/python3.10/unittest/mock.py", line 1285, in __init__
    _check_spec_arg_typos(kwargs)
  File "/usr/lib/python3.10/unittest/mock.py", line 1261, in _check_spec_arg_typos
    raise RuntimeError(
RuntimeError: 'auto_spec' might be a typo; use unsafe=True if this is intended

A similar issue is being fixed in ironic at https://review.opendev.org/c/openstack/ironic/+/821370

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/tap-as-a-service/+/821445

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/tap-as-a-service/+/821445
Committed: https://opendev.org/openstack/tap-as-a-service/commit/7eaf7dfebb428544056877bfe5aaaab6c582f5ca
Submitter: "Zuul (22348)"
Branch: master

commit 7eaf7dfebb428544056877bfe5aaaab6c582f5ca
Author: Corey Bryant <email address hidden>
Date: Fri Dec 10 14:10:11 2021 -0500

    Switch away from Mock auto_spec=True

    In Python 3.10, Mock spec arguments are no longer allowed.
    More details are available at: https://bugs.python.org/issue43478

    Closes-Bug: #1954476
    Change-Id: I98c3d6d67ba518f9c6c3455e9c5b0e2ea669a2f6

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tap-as-a-service 11.0.0.0rc1 release candidate.