Add logging if importing a service goes wrong

git-svn-id: https://svn.apache.org/repos/asf/cxf/dosgi/trunk@1517963 13f79535-47bb-0310-9956-ffa450edef68
Simplify poms

git-svn-id: https://svn.apache.org/repos/asf/cxf/dosgi/trunk@1517965 13f79535-47bb-0310-9956-ffa450edef68
Fix feature for karaf usage

git-svn-id: https://svn.apache.org/repos/asf/cxf/dosgi/trunk@1517966 13f79535-47bb-0310-9956-ffa450edef68