Adapted the product export with MongoDB

| Q                   | A
| ------------------- | ---
| Bug fix?            | no
| New feature?        | yes
| BC breaks?          | yes
| Tests pass?         | no
| Scenarios pass?     | build 816
| Checkstyle issues?  |
| Changelog updated?  |
| Fixed tickets       | PIM-2246
| Doc PR              |