add systest for CXF-5405
remove unused pkg imports from test of CXF-5405
fix build in 2.7.x for incompatible test for CXF-5405

git-svn-id: https://svn.apache.org/repos/asf/cxf/branches/2.6.x-fixes@1552615 13f79535-47bb-0310-9956-ffa450edef68