Hotfix: missing AttachmentType in the carla mock module for unittest (#…

…1077)

* blueprint-based spawn_actor function for CDP

* Auto-Option to decide tracking

* Updated changelog

* spawned actors are tracked if they are Vehicle | Walker

* Updated spawn_actor description

* Added missing AttachmentType for carla mock

---------

Co-authored-by: glopezdiest <58212725+glopezdiest@users.noreply.github.com>

srunner/tests/carla_mocks/carla.py

@@ -306,3 +306,8 @@ def __init__(self, id):
                 reponse_list.append(Response(new_actor.id))
 
         return reponse_list
+
+class AttachmentType:
+    Rigid = 0
+    SpringArm = 1
+    SpringArmGhost = 2