Replace UT strings in local scheduler (#1213)
Replace UT strings in local scheduler (#1213)

* Convert to string using std::string

* Fix linting issue

* Fix linting

* Construct db_connect_args using vector

* Use vector size() instead of num_args

* Hopefully fix linting now

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