pytorch

3d4aabfc - Fix ciflow/all label generation (#63954)

Fix ciflow/all label generation (#63954) Summary: the `ciflow/all` is automatically added but need to be added before we call `gen_root_job_condition`. - fix the order of adding `ciflow/all` - refactor all the string into global constants Pull Request resolved: https://github.com/pytorch/pytorch/pull/63954 Reviewed By: malfet Differential Revision: D30545596 Pulled By: zhouzhuojie fbshipit-source-id: 83ab668f0234488afb855a72e3ebd4503f7f1a78