Add ability to relax the password rules for management/application realm users

Currently the user creation scripts (add-user.sh/add-user.bat) for adding users to the Management/Application realm enforce certain password rules. It would be good to allow a way to relax some of these rules typically in development/personal machines. A discussion about this is available in here which proposes certain ideas http://lists.jboss.org/pipermail/jboss-as7-dev/2012-October/006997.html