modified test datasets for hydropower test. see #3783.

hydropower/aet.tif

hydropower/fractp.tif

hydropower/input/biophysical_table.csv

hydropower/input/depth_to_root_rest_layer.tif

hydropower/input/eto.tif

hydropower/input/hydropower_valuation_table.csv

hydropower/input/lulc.tif

hydropower/input/pawc.tif

hydropower/input/precip.tif

hydropower/input/subwatersheds.dbf

hydropower/input/subwatersheds.prj

hydropower/input/subwatersheds.shp

hydropower/input/subwatersheds.shp.xml

hydropower/input/subwatersheds.shx

hydropower/input/water_demand_table.csv

hydropower/input/watersheds.dbf

hydropower/input/watersheds.prj

hydropower/input/watersheds.shp

hydropower/input/watersheds.shp.xml

hydropower/input/watersheds.shx