[tune] Add Basic Variant Generator to search algorithm shim function (#11334)
[tune] Add Basic Variant Generator to search algorithm shim function (#11334)

* Add Basic Variant Generator

* Add 'random' key to SEARCH_ALG_IMPORT

Co-authored-by: Kai Fricke <31ea678c44dc4e8e22ccfd165592dd71a30e46ae@anyscale.com>

Co-authored-by: Kai Fricke <31ea678c44dc4e8e22ccfd165592dd71a30e46ae@anyscale.com>
ray-project/ray,pcmoritz/ray-1,ray-project/ray,richardliaw/ray,richardliaw/ray,ray-project/ray,richardliaw/ray,pcmoritz/ray-1,ray-project/ray,pcmoritz/ray-1,pcmoritz/ray-1,richardliaw/ray,pcmoritz/ray-1,richardliaw/ray,richardliaw/ray,ray-project/ray,pcmoritz/ray-1,ray-project/ray,ray-project/ray,pcmoritz/ray-1,ray-project/ray,pcmoritz/ray-1,richardliaw/ray,richardliaw/ray