drill

0d4319b2 - DRILL-1950: Update parquet metadata cache format to include both min/max and additional column type information.

DRILL-1950: Update parquet metadata cache format to include both min/max and additional column type information. Parquet meta cache format change: 1. include both min/max in ColumnMetaData if column statistics is available, 2. include precision/scale/repetitionLevel/definitionLevel in ColumnTypeMetaData (precision/scale/definitionLevel is for future use).