MD-2954: Fixed TPCDS100 hive datagen script

Author: prasadns14

framework/resources/Datasources/hive_storage/tpcds100/tpcds100_hive.ddl

@@ -1077,7 +1077,7 @@ STORED AS PARQUET
 LOCATION '/drill/testdata/tpcds_sf100/parquet/catalog_returns';
 
 drop table if exists tpcds100_parquet.web_returns;
-create table tpcds100_parquet.web_returns (
+create external table tpcds100_parquet.web_returns (
      wr_returned_date_sk int,
      wr_returned_time_sk int,
      wr_item_sk int,