Adjust py.test invocation per T5973
Adjust py.test invocation per T5973

Summary: Fixes T5973

Test Plan: how does computer

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5973

Differential Revision: https://secure.phabricator.com/D10356

julkiewicz/arcanist,julkiewicz/arcanist,julkiewicz/arcanist,julkiewicz/arcanist