Create an optionnal paramater for database name in openfire install

Change-Id: I720f5819dbddd77b6ea6aa6ddc667f9f905ae1ab
Merge commit 'refs/changes/29/429/2' of http://gerrit.tuleap.net/tuleap into stable

* http://gerrit.tuleap.net/tuleap:
  Create an optionnal paramater for database name in openfire install
This is Tuleap 5.12.99.76