Make Jenkins approve Merge Requests

Gitlab EE v 7.12.0 introduced the feature 'Project setting: approve merge request by N users before accept'. We'd like to configure that there are 2 approvals required in order to merge a MR. One of the approvals should be done by the jenkins build which builds the MR. As far as I can see a merge-request-triggered jenkins build adds a comment to the MR - it would be cool if the jenkins build would approve the merge-request.