Fix broken hausdorff test (#1295)

This PR revises the gold result of hausdorff empty input test to address
an upstream change in cudf.

Authors:
   - Michael Wang (https://github.com/isVoid)
   - Mark Harris (https://github.com/harrism)

Approvers:
   - Bradley Dice (https://github.com/bdice)
   - Vyas Ramasubramani (https://github.com/vyasr)
   - Mark Harris (https://github.com/harrism)
   - H. Thomson Comer (https://github.com/thomcom)

python/cuspatial/cuspatial/core/spatial/distance.py

@@ -80,7 +80,7 @@ def directed_hausdorff_distance(multipoints: GeoSeries):
 
     num_spaces = len(multipoints)
     if num_spaces == 0:
-        return DataFrame()
+        return DataFrame([])
 
     if not contains_only_multipoints(multipoints):
         raise ValueError("Input must be a series of multipoints.")