Merge pull request #36 from adamreeve/java_external_key_material

GH-25986: Add file encrypted using parquet-mr with external key material
tree: a342cc71d3ec9001a841617e2252a839d1fd2ea6
  1. bad_data/
  2. data/
  3. LICENSE.txt
  4. README.md
README.md

Testing Data and Utilities for Apache Parquet