Confirmed that GroupBy unit tests are passing for all aggregators with varied type combinations of group by/ aggregation columns.
Confirmed that GroupBy unit tests are passing for all aggregators with varied type combinations of group by/ aggregation columns.

gpuopenanalytics/libgdf,gpuopenanalytics/libgdf,gpuopenanalytics/libgdf,gpuopenanalytics/libgdf