request #7698: fixing warnings on default values and taking into account artifact open values

Change-Id: Iee833afeae523632f8dfeed65a9b1913a7d51579
Merge commit 'refs/changes/67/3367/4' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #7698: fixing warnings on default values and taking into account artifact open values
This is Tuleap 7.8.99.16

Change-Id: I6eeac4701e361d586d1cdaf9327036343093cf1c