pytorch

bf70fe69 - Revert D27442325: [torch/elastic] Revise the rendezvous handler registry logic.

Revert D27442325: [torch/elastic] Revise the rendezvous handler registry logic. Test Plan: revert-hammer Differential Revision: D27442325 (https://github.com/pytorch/pytorch/commit/df299dbd7d8241669aaac7ce07ed0c034f219b4f) Original commit changeset: 8519a2caacbe fbshipit-source-id: f10452567f592c23ae79ca31556a2a77546726b1