Fix sla #4015- Project one step creation uses sys_is_project_public (project are no longer private by default)

Change-Id: If884f1374c920f3e4905564f7239634248a19dd0
Merge commit 'refs/changes/51/651/1' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  Fix sla #4015- Project one step creation uses sys_is_project_public (project are no longer private by default)

Change-Id: I440d312f528173f35b0e3b49fe54130505dd2279
This is Tuleap 6.2.99.26

Change-Id: I84688e251bca3ac02fb633d617625345fb3c5f2c