parquet-mr must handle statistics in files written by parquet-cpp

`shouldIgnoreStatistics` in parquet-mr always accepts statistics for files written by other applications including parquet-cpp. We must fix this to correctly handle statistics written by parquet-cpp versions.

**Reporter**: [Deepak Majeti](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mdeepak) / @majetideepak

_{**Note**: *This issue was originally created as [PARQUET-1017](https://issues.apache.org/jira/browse/PARQUET-1017). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}