added parameter descriptors for XLSInstanceWriter

Change-Id: Ib94bfaebf6d28fbbd0f019331835a7e95430e930
Reviewed-on: http://gerrit.esdi-community.eu/3193
Tested-by: Jenkins <sitemple@igd.fraunhofer.de>
Reviewed-by: Simon Templer <simon.templer@igd.fraunhofer.de>