PIM-2521: Avoid to load all attributes in grid column configuration 

| Q                   | A
| ------------------- | ---
| Bug fix?            | N
| New feature?        | N
| BC breaks?          | N
| Tests pass?         | Y
| Scenarios pass?     | - 
| Checkstyle issues?  | - 
| Changelog updated?  | - 
| Fixed tickets       | PIM-2521
| Doc PR              | -