Extending LoggingRoute to handle stored results
Extending LoggingRoute to handle stored results

Summary: Allows for the LoggingRoute callback to be triggered when isStoredResult() is true.

Reviewed By: andreazevedo

Differential Revision: D13330745

fbshipit-source-id: fa1d33f8f63d2c6a44422ab700207534faaf110d

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