[SPARK-3011][SQL] _temporary directory should be filtered out by sqlContext.parquetFile

fix compile error on hadoop 0.23 for the pull request #1924. 

maybe we should think , and use filter here, something like:
```
val children = fs.listStatus(path).filter { status =>
  val name = status.getPath.getName
  name == ParquetFileWriter.PARQUET_METADATA_FILE || (name(0) != '0' && name(0) != '_')
}
```
so we can ignore all of hidden/tmp files without ```_metadata```