Fixing a wrong option name in setup.sh

Change-Id: I8e78d09f44f45bfb411ed5586547a86002cdf97d
Merge commit 'refs/changes/08/1708/1' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fixing a wrong option name in setup.sh

Change-Id: I692d139ad8e6c162ebc945a4ef12bf8ac206adfb
This is Tuleap 6.9.99.18

Change-Id: I97ad4f511c76fcf69f8b8864de6b939154791833