Add a skip_override option to should_run_job.py (#25118)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/25118
This allows people to temporarily disable a job from running on PRs. We
should use this only if there is a long-running breakage that can't be
fixed in a simple way.
Test Plan: Imported from OSS
Differential Revision: D16994074
Pulled By: suo
fbshipit-source-id: 6aa9c618057c126d16065e53a60204665d8ff0eb
