Add logging of Device Refs in Connection
Add logging of Device Refs in Connection

Summary: This will help debug "Device is not connected"

Reviewed By: zeyadsalloum

Differential Revision: D22067143

fbshipit-source-id: 786017cc029074a04d1615e9c27adc2c76a07953

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