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This is a mechanically generated patch to add a unit test job running under Python 3.7. See ML discussion here [1] for context. [1] http://lists.openstack.org/pipermail/openstack-dev/2018-October/135626.html Story: #2004073 Task: #27440 Change-Id: Iffdb4ad1ab66c570e0a94cfa02a4eedd3a906d08