Add single process version of dynamo distributed hf_Bert tests (#89721)
It's a lot easier to debug problems in the Dynamo optimization pass if
you aren't actually triggering a multiprocessing run. Keep these tests
around.
I think the other tests can probably get this treatment too, leaving
this to future work.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89721
Approved by: https://github.com/voznesenskym
