What we expect during migration:
1. Copy objects as well as properties from SQLCatalog to ERP5Catalog
2. Migration of SQL Methods and Python Scripts as ERP5 objects
3. Update migration with filter_dict for methods

The migration function would now create portal_catalog based on
'Catalog Tool' portal_type and after that it'll migrate the objects
(catalog, SQL Method, Python Scripts) in it.

Also, update BusinessTemplate fucntions according to changes made after migration