scripts: Add promotion script for s3 to pypi (#34500)
Summary:
Is reliant on scripts for promotion from s3 to s3 to have already run.
A continuation of the work done in https://github.com/pytorch/pytorch/issues/34274
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/34500
Test Plan: yeah_sandcastle
Differential Revision: D20389101
Pulled By: seemethere
fbshipit-source-id: 5e5b554cff964630c5414d48be35f14ba6894021
