leaks: Allow passing a GstStructure to configure the tracer
leaks: Allow passing a GstStructure to configure the tracer

But keep understanding the simple synthax with a comma separated
list of filters

https://bugzilla.gnome.org/show_bug.cgi?id=775541

StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer