Log at INFO level by default (including in autoscaler). (#2824)
Log at INFO level by default (including in autoscaler). (#2824)

Before this change, the autoscaler `up` and related commands don't print any info messages to the console at all. This was a regression from 0.5. @richardliaw @robertnishihara https://github.com/ray-project/ray/issues/2812
robertnishihara/ray,ray-project/ray,stephanie-wang/ray,richardliaw/ray,ray-project/ray,richardliaw/ray,richardliaw/ray,stephanie-wang/ray,ujvl/ray-ng,ray-project/ray,pcmoritz/ray-1,robertnishihara/ray,pcmoritz/ray-1,ujvl/ray-ng,ray-project/ray,robertnishihara/ray,robertnishihara/ray,stephanie-wang/ray,stephanie-wang/ray,ray-project/ray,stephanie-wang/ray,robertnishihara/ray,atumanov/ray,pcmoritz/ray-1,richardliaw/ray,atumanov/ray,ray-project/ray,pcmoritz/ray-1,atumanov/ray,atumanov/ray,ray-project/ray,stephanie-wang/ray,robertnishihara/ray,pcmoritz/ray-1,pcmoritz/ray-1,richardliaw/ray,ujvl/ray-ng,richardliaw/ray,atumanov/ray,stephanie-wang/ray,ujvl/ray-ng,atumanov/ray,robertnishihara/ray,robertnishihara/ray,atumanov/ray,atumanov/ray,stephanie-wang/ray,pcmoritz/ray-1,richardliaw/ray,pcmoritz/ray-1,richardliaw/ray,stephanie-wang/ray,robertnishihara/ray,ray-project/ray