make operationTracker required in QueryExecutor
make operationTracker required in QueryExecutor

Reviewed By: josephsavona

Differential Revision: D27746274

fbshipit-source-id: 36d948b92fb05f002a873e006be54b2f0db0183c

facebook/relay,josephsavona/relay,wincent/relay,kassens/relay,xuorig/relay,atxwebs/relay,xuorig/relay,xuorig/relay,wincent/relay,voideanvalue/relay,josephsavona/relay,wincent/relay,atxwebs/relay,josephsavona/relay,kassens/relay,kassens/relay,atxwebs/relay,voideanvalue/relay,xuorig/relay,facebook/relay,facebook/relay,kassens/relay,voideanvalue/relay,xuorig/relay,wincent/relay,voideanvalue/relay,wincent/relay,facebook/relay,facebook/relay,kassens/relay,wincent/relay,atxwebs/relay,voideanvalue/relay,voideanvalue/relay,facebook/relay,xuorig/relay,kassens/relay