Update RaySGD test to use ray.kill instead of __ray_kill__ (#8662)
Update RaySGD test to use ray.kill instead of __ray_kill__ (#8662)


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