use constructor injection

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1556439 13f79535-47bb-0310-9956-ffa450edef68
remove use of httpunit

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1556440 13f79535-47bb-0310-9956-ffa450edef68