[WIP] PIM-2730: Use smart registry

| Q                   | A
| ------------------- | ---
| Bug fix?            | N
| New feature?        | N
| BC breaks?          | N
| Tests pass?         | Y
| Scenarios pass?     | 
| Checkstyle issues?  | N
| Changelog updated?  | N
| Fixed tickets       | PIM-2730
| Doc PR              |
Not a good idea, association_type will stay on ORM