drill

a5a1aa6b - DRILL-4048: Fix reading required dictionary encoded varbinary data in parquet files after recent update

DRILL-4048: Fix reading required dictionary encoded varbinary data in parquet files after recent update Fix was small, this update is a little larger than necessary because I was hoping to create a unit test by modifying the one I had added in the earlier patch with the version upgrade. Unfortunately we don't have a good way to generate Parquet files with required columns from unit tests right now. So I just added a smaller subset of the binary file that was posted on the JIRA issue. The refactoring of the earlier test was still useful for readability, so I kept it in.