Make tools/actions_local_runner.py PY-3.X compatible (#58787)
Summary:
Do not use `shlex.join`, which is a simple join over quoted args, i.e.
https://github.com/python/cpython/blob/a9e43615c2e1fc5dd60063c1509e8b1c5daad095/Lib/shlex.py#L318-L320
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58787
Reviewed By: driazati
Differential Revision: D28619996
Pulled By: malfet
fbshipit-source-id: dd4e939a88e2923b41084da2b5fbdbee859c0104
