pytorch

a970e525 - make ProcessGroup.Options.timeout argument private in python (#56531)

make ProcessGroup.Options.timeout argument private in python (#56531) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/56531 per discussions in https://github.com/pytorch/pytorch/pull/53663/files#r593409009, we need to make sure our API not confusing user by passing in both timeout in argument and timeout in processgroup.options. This PR tries to make the `ProcessGroup.Options.timeout` be a private field, and only be used in our test utils, for both `init_process_group` and `new_group`, we still allow user pass `timeout` as a separate argument. Since `ProcessGroupGloo.Options` only have a `timeout` config, both functions will not allow passing in options for the GLOO backend. This way we still preserve the only `timeout` API, and only allow user to use `ProcessGroupNCCL.Options` when needed. cc pritamdamania87 rohan-varma Test Plan: Imported from OSS Reviewed By: rohan-varma Differential Revision: D27893395 Pulled By: wanchaol fbshipit-source-id: cdd29c84648002226ef3d9f9f3ea67b795e64bc5