Encryption: Interop and Function test suite for Java version

[asfimport]

1. Interop: test parquet-mr reading of encrypted files produced by parquet-cpp (fetched from parquet-testing)
2. Function: test writing/reading in a number of encryption and decryption configurations

Reporter: Gidon Gershinsky / @ggershinsky
Assignee: Maya Anderson / @andersonm-ibm

Related issues:

• Add Apache 2.0 license to README.md files in parquet-testing (Dependent)

PRs and other links:

• GitHub Pull Request #782

_{Note: This issue was originally created as PARQUET-1807. Please see the migration documentation for further details.}