Get Gerrit migration to remove special rights attributed to Administrators group

Change-Id: I69533ffede339ad7045f44e19dc7e894ff62e882
Merge commit 'refs/changes/35/1435/3' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  Get Gerrit migration to remove special rights attributed to Administrators group

Change-Id: If3326968d8e2b1aedf7f83b718d927d2feb18af9
Tuleap 6.7.99.9

Change-Id: I3299b858c52d35e210db91116ffe38a2f66609b4