Cannot build parquet-tools as per instructions

If I follow https://github.com/nielsbasjes/parquet-mr/tree/master/parquet-tools

I.e. clone and run

```Java

cd parquet-tools && mvn clean package -Plocal
```

then I get

```Java

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Apache Parquet Tools 1.9.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for org.apache.parquet:parquet-hadoop:jar:1.9.1-SNAPSHOT is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.846s
[INFO] Finished at: Tue Oct 10 10:36:37 UTC 2017
[INFO] Final Memory: 11M/483M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project parquet-tools: Could not resolve dependencies for project org.apache.parquet:parquet-tools:jar:1.9.1-SNAPSHOT: Failure to find org.apache.parquet:parquet-hadoop:jar:1.9.1-SNAPSHOT in http://repository.apache.org/snapshots was cached in the local repository, resolution will not be reattempted until the update interval of apache.snapshots has elapsed or updates are forced -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
```

**Reporter**: [sam](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=sams) / @samthebest

_{**Note**: *This issue was originally created as [PARQUET-1129](https://issues.apache.org/jira/browse/PARQUET-1129). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}

parquet-tools ディレクトリで、リンク先の手順に従い、`mvn clean package -Plocal` を実行して依存関係の解決に失敗する問題を再現することから始めます。`parquet-hadoop` 1.9.1-SNAPSHOT 依存関係を宣言しているビルドメタデータを調査し、文書化されたビルドが不足しているアーティファクトのエラーなしに正常に完了することを確認します。

索引モデルが issue の本文から書いたものです。