I missed to override a method. see logs on dev@ http://markmail.org/message/ecmo3jqopuh6rfj2

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1451377 13f79535-47bb-0310-9956-ffa450edef68
override AbstractUserManager rather than Configurable.

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1451378 13f79535-47bb-0310-9956-ffa450edef68