Fix request #6360 - Cross tracker search broken

Change-Id: I25a4421b26b5876f2de36d3315bd16d578a299fe
Merge commit 'refs/changes/30/2030/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix request #6360 - Cross tracker search broken

Change-Id: I1e205d75075f78d55c666c7a117b57cfe740f81d
Tuleap 6.10.99.71

Change-Id: I5f238c232f5cccb2bc91006466be43344f65f1e6