Vehicle_Status_msg - Add attitude_failure flag to vehicle_status message

msg/vehicle_status.msg

@@ -67,6 +67,7 @@ bool high_latency_data_link_active 		# all low latency datalinks to GCS lost
 uint8 data_link_lost_counter			# counts unique data link lost events
 bool engine_failure				# Set to true if an engine failure is detected
 bool mission_failure				# Set to true if mission could not continue/finish
+bool attitude_failure 				# Set to true if attitude failure has been detected
 
 # see SYS_STATUS mavlink message for the following
 uint32 onboard_control_sensors_present

src/modules/commander/Commander.cpp

@@ -2295,6 +2295,7 @@ Commander::run()
 					failure_status.pitch) {
 
 					armed.force_failsafe = true;
+					status.attitude_failure = true;
 					status_changed = true;
 
 					// Only display an user message if the circuit-breaker is disabled