Currenlty, when a test group is invalid already, we also throw unsued file errors. This leads to clutter as more often than not, the unused files are caused by an invalid configuration, making the debug stack bigger without reason. With this commit the behavior is changed to only error about unused files, when no other configuration issues were found Change-Id: I92a819753f13b8ed5a07dae53ecaee5d84b5ce64