Add lint to ensure all test files have headers with ownership info (#66826)
Summary:
UPDATE: CI should be green now with the added files.
This should fail for now, but will pass when all action for https://github.com/pytorch/pytorch/issues/66232 is done.
Example failure run: https://github.com/pytorch/pytorch/runs/4052881947?check_suite_focus=true
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66826
Reviewed By: seemethere
Differential Revision: D32087209
Pulled By: janeyx99
fbshipit-source-id: ad4b51e46de54f23aebacd592ee67577869f8bb6
