Add setupManufacturingModeMatch

Missed adding setupManufacturingModeMatch function in ExitAirTempSensor.cpp

Issues from: https://github.com/openbmc/dbus-sensors/issues/14

Signed-off-by: Bruce Lee <Bruce_Lee@quantatw.com>
Change-Id: I61ce16342aa0321972f74f705d94f5eb688e40dc
diff --git a/src/ExitAirTempSensor.cpp b/src/ExitAirTempSensor.cpp
index c0aae42..8ea42ff 100644
--- a/src/ExitAirTempSensor.cpp
+++ b/src/ExitAirTempSensor.cpp
@@ -1001,6 +1001,7 @@
         matches.emplace_back(std::move(match));
     }
 
+    setupManufacturingModeMatch(*systemBus);
     io.run();
     return 0;
 }