added missing GeoJSONConfig complex type descriptor (untested)

Also added corresponding parameter value descriptor.

Change-Id: Ibbdd92554b7500f59525a8fb109c73a66b27e52b
Reviewed-on: http://gerrit.esdi-community.eu/3124
Tested-by: Jenkins <sitemple@igd.fraunhofer.de>
Reviewed-by: Simon Templer <simon.templer@igd.fraunhofer.de>