Log Xcode Configuration in fbxctest bootstrap
Log Xcode Configuration in fbxctest bootstrap

Summary: Also very helpful for failure diagnosis.

Reviewed By: marekcirkos

Differential Revision: D6231005

fbshipit-source-id: 5a82073f053aaea4812b8e95fb998dd6a1be04c0

facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl