default delimiter . generate ugly xml file

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1430180 13f79535-47bb-0310-9956-ffa450edef68
make propertyDelimiter configurable

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1430181 13f79535-47bb-0310-9956-ffa450edef68