add notes on tests that are sensitive to gdal versions. #762
add notes on tests that are sensitive to gdal versions. #762

raquel-ucl/cartodb,splashblot/dronedb,DigitalCoder/cartodb,codeandtheory/cartodb,UCL-ShippingGroup/cartodb-1,bloomberg/cartodb,CartoDB/cartodb,thorncp/cartodb,bloomberg/cartodb,dbirchak/cartodb,codeandtheory/cartodb,future-analytics/cartodb,codeandtheory/cartodb,CartoDB/cartodb,thorncp/cartodb,future-analytics/cartodb,future-analytics/cartodb,splashblot/dronedb,DigitalCoder/cartodb,UCL-ShippingGroup/cartodb-1,DigitalCoder/cartodb,splashblot/dronedb,splashblot/dronedb,CartoDB/cartodb,raquel-ucl/cartodb,dbirchak/cartodb,DigitalCoder/cartodb,nyimbi/cartodb,UCL-ShippingGroup/cartodb-1,UCL-ShippingGroup/cartodb-1,raquel-ucl/cartodb,bloomberg/cartodb,thorncp/cartodb,dbirchak/cartodb,nyimbi/cartodb,bloomberg/cartodb,future-analytics/cartodb,thorncp/cartodb,CartoDB/cartodb,raquel-ucl/cartodb,future-analytics/cartodb,thorncp/cartodb,codeandtheory/cartodb,codeandtheory/cartodb,nuxcode/cartodb,nyimbi/cartodb,nuxcode/cartodb,splashblot/dronedb,dbirchak/cartodb,nuxcode/cartodb,DigitalCoder/cartodb,nyimbi/cartodb,bloomberg/cartodb,UCL-ShippingGroup/cartodb-1,CartoDB/cartodb,nyimbi/cartodb,dbirchak/cartodb,raquel-ucl/cartodb,nuxcode/cartodb,nuxcode/cartodb