PARQUET-1878: Fix legacy LZ4-compressed file (#14)

A Snappy-compressed file was mistakingly uploaded.
Replace it with a "raw" LZ4-compressed file (generated by Arrow 0.17.0).
This is the LZ4 block format without the custom Hadoop header.

```
Version: 1.0
Created By: parquet-cpp version 1.5.1-SNAPSHOT
Total rows: 4
Number of RowGroups: 1
Number of Real Columns: 3
Number of Columns: 3
Number of Selected Columns: 3
Column 0: c0 (INT64)
Column 1: c1 (BYTE_ARRAY)
Column 2: v11 (DOUBLE)
--- Row Group: 0 ---
--- Total Bytes: 281 ---
--- Rows: 4 ---
Column 0
  Values: 4, Null Values: 0, Distinct Values: 0
  Max: 1593604801, Min: 1593604800
  Compression: LZ4_RAW, Encodings: PLAIN_DICTIONARY PLAIN RLE
  Uncompressed Size: 100, Compressed Size: 103
Column 1
  Values: 4, Null Values: 0, Distinct Values: 0
  Max: def, Min: abc
  Compression: LZ4_RAW, Encodings: PLAIN_DICTIONARY PLAIN RLE
  Uncompressed Size: 68, Compressed Size: 70
Column 2
  Values: 4, Null Values: 0, Distinct Values: 0
  Max: 42.125, Min: 7.7
  Compression: LZ4_RAW, Encodings: PLAIN_DICTIONARY PLAIN RLE
  Uncompressed Size: 109, Compressed Size: 108
--- Values ---
c0                            |c1                            |v11                           |
1593604800                    |abc                           |42.000000                     |
1593604800                    |def                           |7.700000                      |
1593604801                    |abc                           |42.125000                     |
1593604801                    |def                           |7.700000                      |
```
1 file changed
tree: 7c173fcb4c769b21e79a3e776be2b5ce399dab49
  1. bad_data/
  2. data/
  3. LICENSE.txt
  4. README.md
README.md

Testing Data and Utilities for Apache Parquet