pytorch

868cb05a - Resubmit "Add RpcAgentTestFixture to extract duplicate code" (#30092)

Resubmit "Add RpcAgentTestFixture to extract duplicate code" (#30092) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/30092 There are duplicate code for component that rely on RpcAgent. Extract them into a re-usable test fixture class. ghstack-source-id: 94196891 Test Plan: ### RPC + RRef ``` buck test mode/dev-nosan //caffe2/test:rpc_fork buck test mode/dev-nosan //caffe2/test:rpc_spawn ``` ``` buck test mode/dev-nosan //caffe2/test:rpc_fork_thrift buck test mode/dev-nosan //caffe2/test:rpc_spawn_thrift ``` ### Dist Autograd ``` buck test mode/dev-nosan //caffe2/test:dist_autograd_fork buck test mode/dev-nosan //caffe2/test:dist_autograd_spawn ``` ``` buck test mode/dev-nosan //caffe2/test:dist_autograd_fork_thrift buck test mode/dev-nosan //caffe2/test:dist_autograd_spawn_thrift ``` ### Dist Optimizer ``` buck test mode/dev-nosan //caffe2/test:dist_optimizer_fork buck test mode/dev-nosan //caffe2/test:dist_optimizer_spawn ``` ``` buck test mode/dev-nosan //caffe2/test:dist_optimizer_fork_thrift buck test mode/dev-nosan //caffe2/test:dist_optimizer_spawn_thrift ``` Differential Revision: D18595408 fbshipit-source-id: 8360759c63e838fb19d4eb1aeacca0bf8eb4b55f