EKF: capture airspeed innovation test failures

EKF/airspeed_fusion.cpp

@@ -139,10 +139,12 @@ void Ekf::fuseAirspeed()
 		// If the innovation consistency check fails then don't fuse the sample and indicate bad airspeed health
 		if (_tas_test_ratio > 1.0f) {
 			_airspeed_healthy = false;
+			_sensor_fault_status.flags.reject_airspeed = true;
 			return;
 		}
 		else {
 			_airspeed_healthy = true;
+			_sensor_fault_status.flags.reject_airspeed = false;
 		}
 
 		// Airspeed measurement sample has passed check so record it