Ars increase (#2844)
Ars increase (#2844)

* removed cv2

* remove opencv

* increased number of default rollouts ARS

* put cv2 back in this branch

* put cv2 back in this branch

* moved cv2 back where it belongs in preprocessors

richardliaw/ray,robertnishihara/ray,ray-project/ray,pcmoritz/ray-1,richardliaw/ray,stephanie-wang/ray,stephanie-wang/ray,atumanov/ray,richardliaw/ray,atumanov/ray,robertnishihara/ray,pcmoritz/ray-1,atumanov/ray,pcmoritz/ray-1,stephanie-wang/ray,richardliaw/ray,richardliaw/ray,ray-project/ray,ujvl/ray-ng,ray-project/ray,ujvl/ray-ng,ujvl/ray-ng,stephanie-wang/ray,stephanie-wang/ray,richardliaw/ray,pcmoritz/ray-1,robertnishihara/ray,robertnishihara/ray,ray-project/ray,robertnishihara/ray,richardliaw/ray,atumanov/ray,robertnishihara/ray,ray-project/ray,pcmoritz/ray-1,ray-project/ray,ray-project/ray,richardliaw/ray,atumanov/ray,robertnishihara/ray,atumanov/ray,stephanie-wang/ray,atumanov/ray,stephanie-wang/ray,robertnishihara/ray,stephanie-wang/ray,ray-project/ray,pcmoritz/ray-1,stephanie-wang/ray,atumanov/ray,pcmoritz/ray-1,ujvl/ray-ng,robertnishihara/ray,pcmoritz/ray-1