added parameter descriptors for CSVInstanceReader

Change-Id: I8276361d3ccd6ce9d17b8609b67f6908f5d21a48
Reviewed-on: http://gerrit.esdi-community.eu/3190
Tested-by: Jenkins <sitemple@igd.fraunhofer.de>
Reviewed-by: Simon Templer <simon.templer@igd.fraunhofer.de>