Update osi_object.proto

* resolves #844 

Signed-off-by: Carlo van Driesten <[email protected]>

Author: jdsika

Diff for: osi_object.proto

@@ -954,6 +954,10 @@ message MovingObject
             //
             optional GenericLightState reversing_light = 6;
 
+            // State of the tail light (rear position light).
+            //
+            optional GenericLightState tail_light = 11;
+
             // State of the brake lights.
             //
             optional BrakeLightState brake_light_state = 7;