request #6632: trigger rules are duplicated

When creating a new project, if the template has trackers with triggers defined,
they are duplicated into the new project

Change-Id: I935ec16fb466175f846a27ea276eb0d34362c457
Merge commit 'refs/changes/62/2262/3' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6632: trigger rules are duplicated
This is Tuleap 6.12.99.33

Change-Id: I100011e94ea3cf040fe1304eb0871cf7e4af641f