layers: Add VO get function to chassis

This'll return the validation object of the specified type.

Change-Id: I772fbfdc8c1a2f6bafbc29ed236bf200c2870417
diff --git a/scripts/layer_chassis_generator.py b/scripts/layer_chassis_generator.py
index 9ee1e44..4e35dd7 100644
--- a/scripts/layer_chassis_generator.py
+++ b/scripts/layer_chassis_generator.py
@@ -270,6 +270,15 @@
         virtual void write_lock() { validation_object_mutex.lock(); }
         virtual void write_unlock() { validation_object_mutex.unlock(); }
 
+        ValidationObject* GetValidationObject(std::vector<ValidationObject*>& object_dispatch, LayerObjectTypeId object_type) {
+            for (auto validation_object : object_dispatch) {
+                if (validation_object->container_type == object_type) {
+                    return validation_object;
+                }
+            }
+            return nullptr;
+        };
+
         std::string layer_name = "CHASSIS";
 
         // Handle Wrapping Data