only upload s3 stats on master, nightly, and release branch (#49645)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/49645
Reviewed By: malfet
Differential Revision: D25665851
Pulled By: walterddr
fbshipit-source-id: 1cf50f6e3657f70776aaf3c5d3823c8a586bf22d
Author
Rong Rong (AI Infra)
