Fix bugs #2728 - [SOAP] Problem with the update of an artifact field value of type artifact link.
https://tuleap.net/plugins/tracker/?aid=2728

Change-Id: I552b9c2ccb997e41b4be33a7e63ccbfdb83c6597
Merge commit 'refs/changes/23/323/4' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix bugs #2728 - [SOAP] Problem with the update of an artifact field value of type artifact link. https://tuleap.net/plugins/tracker/?aid=2728
Tuleap 5.11.99.11