Add Test: ReportConfigurationTest

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/branches/gsoc@1549387 13f79535-47bb-0310-9956-ffa450edef68
Add Test: DirectoryWalkerTest

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/branches/gsoc@1549388 13f79535-47bb-0310-9956-ffa450edef68