request #6879: Can't create a custom service

Change-Id: I4657467ff8c9a7d8f7fbc0018b6db835a9b0b99e
Merge commit 'refs/changes/41/2441/2' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6879: Can't create a custom service
This is Tuleap 7.0.99.27

Change-Id: Ibc6f1fe4856e404e18b0859bf9996ae73041f7f1