guest role is Guest: ldap is case sensitive !

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-core/trunk@1436966 13f79535-47bb-0310-9956-ffa450edef68
bad idea :-(

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-core/trunk@1436967 13f79535-47bb-0310-9956-ffa450edef68