tasks #7071 Add logs

Change-Id: Ib3b62784e8ed220044a1839c0d6d4d62dadcf496
Merge commit 'refs/changes/67/2667/3' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  tasks #7071 Add logs

Change-Id: I10cb26172e4fa195d00e48cdc8b341aa02a3ecec
Tuleap 7.1.99.52

Change-Id: Ie333107ece9cdd827d0fc661ff7557d08a0866b9