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.*}

从 parquet-tools 目录开始，按照链接的说明运行 `mvn clean package -Plocal`，以重现依赖解析失败。检查声明 `parquet-hadoop` 1.9.1-SNAPSHOT 依赖的构建元数据，并验证文档中所述的构建能够在不出现缺少工件错误的情况下成功完成。

由索引模型根据 Issue 内容生成。