[skip ci] Set test owner for multiprocessing tests (#66848)
Summary:
Action following https://github.com/pytorch/pytorch/issues/66232
cc VitalyFedyunin
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66848
Reviewed By: VitalyFedyunin
Differential Revision: D31828908
Pulled By: janeyx99
fbshipit-source-id: 45d6901648f5564c1bf07ad8d01d69ef486ae104
