Make setup-dev.py more resilient (#6467)
Make setup-dev.py more resilient (#6467)

* fix_tests

* link_tests

ray-project/ray,pcmoritz/ray-1,pcmoritz/ray-1,robertnishihara/ray,richardliaw/ray,ray-project/ray,ray-project/ray,robertnishihara/ray,richardliaw/ray,pcmoritz/ray-1,ray-project/ray,pcmoritz/ray-1,stephanie-wang/ray,pcmoritz/ray-1,pcmoritz/ray-1,pcmoritz/ray-1,stephanie-wang/ray,ray-project/ray,stephanie-wang/ray,stephanie-wang/ray,robertnishihara/ray,ray-project/ray,robertnishihara/ray,richardliaw/ray,richardliaw/ray,robertnishihara/ray,ray-project/ray,ray-project/ray,richardliaw/ray,stephanie-wang/ray,robertnishihara/ray,richardliaw/ray,pcmoritz/ray-1,robertnishihara/ray,richardliaw/ray,stephanie-wang/ray,stephanie-wang/ray,robertnishihara/ray,richardliaw/ray,stephanie-wang/ray,stephanie-wang/ray,robertnishihara/ray