[Fix] Ignore the distributed tests for macOS platform (#821)

* only test timer in linux

* Fix merge_stage_test.yml

* remove install ffmpeg

* test_ci

* test_ci

* Fix python -m pip install pip --upgrade to pip install

* don't test unittest with sleep 1 in windows

* debug with tmate

* increase timeout

* increase timeout

* skip test gloo

* skip test gloo

* fix synteax error

* skip test gloo in torch 1.13

* skip test gloo in torch 1.13

* skip testing setup_env in macOS

* skip test test_dist

* skip test setup

* restore triggered during push

* clean the code

* debug macos

* refine macOS CI

* test merge stage test

* trigger CI during push to main

* Fix as comment