pytorch

567c51cc - In common_distributed, fix TEST_SKIPS multiprocessing manager (#44525)

In common_distributed, fix TEST_SKIPS multiprocessing manager (#44525) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/44525 Since `TEST_SKIPS` is a global multiprocessing.manager, this was causing issues when one test would fail and make the rest of the tests fail during setup due to networking errors. See the failed CI job: https://app.circleci.com/pipelines/github/pytorch/pytorch/212491/workflows/0450151d-ca09-4cf6-863d-272de6ed917f/jobs/7389065 for an example, where `test_ddp_backward` failed but then caused the rest of the tests to fail at the line `test_skips.update(TEST_SKIPS)`. To fix this issue, at the end of every test we revert `TEST_SKIPS` back to a regular dict, and redo the conversion to a `mulitiprocessing.Manager` in the next test, which prevents these errors. ghstack-source-id: 111844724 Test Plan: CI Reviewed By: malfet Differential Revision: D23641618 fbshipit-source-id: 27ce823968ece9804bb4dda898ffac43ef732b89