Bring back gradient_type temporarly

Author: domfournier

simpeg_drivers/driver.py

@@ -533,6 +533,15 @@ def get_regularization(self):
             reg_func.norms = [fun.norm for fun in functions]
             reg_funcs.append(reg_func)
 
+        # TODO - To be deprcated on GEOPY-2109
+        if getattr(self.params, "gradient_type") is not None:
+            for reg in reg_funcs:
+                setattr(
+                    reg,
+                    "gradient_type",
+                    getattr(self.params, "gradient_type"),
+                )
+
         return objective_function.ComboObjectiveFunction(objfcts=reg_funcs)
 
     def get_tiles(self):