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: seemethere
Differential Revision: D32501718
Pulled By: janeyx99
fbshipit-source-id: 9918d626e90bea1562a3094c6eb12cb7d86dbf6a
