Actually enable PYTORCH_RETRY_TEST_CASES for linux tests (#68486)
Summary:
After realizing that CUDA mem leaks were not rerun, I realized I forgot to pass the env var as a Docker variable.
What a noob mistake.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68486
Reviewed By: malfet, seemethere
Differential Revision: D32477989
Pulled By: janeyx99
fbshipit-source-id: e28d095773f50864ab49229e434187a9ecb004cc
