Make "__mcrouter__.route_handles()" and "__mcrouter__.route()" work with non-key types
Make "__mcrouter__.route_handles()" and "__mcrouter__.route()" work with non-key types

Summary: Enabling both route_handles() and route() deal with JSON like keys.

Reviewed By: andreazevedo

Differential Revision: D7559853

fbshipit-source-id: 04060cd28d2a4d127f09e36caf1a5e60530ac401

facebook/mcrouter,facebook/mcrouter,facebook/mcrouter,facebook/mcrouter