Make run_test.py work even if s3_stat_parser fails to import (#56039)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56039
Python will try to eagerly resolve the name references even if
the import failed. Quote them so that it doesn't.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Reviewed By: janeyx99
Differential Revision: D27770536
Pulled By: ezyang
fbshipit-source-id: b111739289498f9bab856fb9424f3080efee4ee0
