Add timeout on companion commands
Add timeout on companion commands

Summary: This will help when things get wedged

Reviewed By: johnny90

Differential Revision: D20736371

fbshipit-source-id: 2fbb7f14a63e796efec6cc5e35503f57b15f11a9

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