legocastle json files for wdt build
legocastle json files for wdt build

Summary:
the _test file works:

https://our.intern.facebook.com/intern/sandcastle/1971357929/

Reviewed By: uddipta, perryjrandall

Differential Revision: D3941714

fbshipit-source-id: 5383d12e8c6ed291543683d042c7dd993ce23540

ldemailly/wdt,ldemailly/wdt,luluandleilei/wdt,luluandleilei/wdt,ldemailly/wdt,luluandleilei/wdt,luluandleilei/wdt,ldemailly/wdt