pytorch

1d4d9ffc - [torch/elastic] Refactor rendezvous store initialization logic (#58057)

[torch/elastic] Refactor rendezvous store initialization logic (#58057) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/58057 This PR refactors the store initialization logic and moves it to the `create_backend` function for both C10d and etcd backends. ghstack-source-id: 128671579 Test Plan: Run the existing and revised tests. Reviewed By: tierex Differential Revision: D28356587 fbshipit-source-id: caf9416ab811eefe4834268d8a11a48f2236ed5b