PARQUET-59: Fix parquet-scrooge test on hadoop-2.

Author: Ryan Blue <rblue@cloudera.com>

Closes #27 from rdblue/PARQUET-59-fix-scrooge-test-on-hadoop-2 and squashes the following commits:

ac34369 [Ryan Blue] PARQUET-59: Fix parquet-scrooge test on hadoop-2.