[SPARK-20107][DOC] Add...

[SPARK-20107][DOC] Add spark.hadoop.mapreduce.fileoutputcommitter.algorithm.version option to configuration.md

## What changes were proposed in this pull request?

Add `spark.hadoop.mapreduce.fileoutputcommitter.algorithm.version` option to `configuration.md`.
Set `spark.hadoop.mapreduce.fileoutputcommitter.algorithm.version=2` can speed up [HadoopMapReduceCommitProtocol.commitJob](https://github.com/apache/spark/blob/v2.1.0/core/src/main/scala/org/apache/spark/internal/io/HadoopMapReduceCommitProtocol.scala#L121) for many output files.

All cloudera's hadoop 2.6.0-cdh5.4.0 or higher versions(see: https://github.com/cloudera/hadoop-common/commit/1c1236182304d4075276c00c4592358f428bc433 and https://github.com/cloudera/hadoop-common/commit/16b2de27321db7ce2395c08baccfdec5562017f0) and apache's hadoop 2.7.0 or higher versions support this improvement.

More see:

1. [MAPREDUCE-4815](https://issues.apache.org/jira/browse/MAPREDUCE-4815): Speed up FileOutputCommitter#commitJob for many output files.
2. [MAPREDUCE-6406](https://issues.apache.org/jira/browse/MAPREDUCE-6406): Update the default version for the property mapreduce.fileoutputcommitter.algorithm.version to 2.

## How was this patch tested?

Manual test and exist tests.

Author: Yuming Wang <wgyumg@gmail.com>

Closes #17442 from wangyum/SPARK-20107.

docs/configuration.md

@@ -1137,6 +1137,15 @@ Apart from these, the following properties are also available, and may be useful
     mapping has high overhead for blocks close to or below the page size of the operating system.
   </td>
 </tr>
+<tr>
+  <td><code>spark.hadoop.mapreduce.fileoutputcommitter.algorithm.version</code></td>
+  <td>1</td>
+  <td>
+    The file output committer algorithm version, valid algorithm version number: 1 or 2.
+    Version 2 may have better performance, but version 1 may handle failures better in certain situations,
+    as per <a href="https://issues.apache.org/jira/browse/MAPREDUCE-4815">MAPREDUCE-4815</a>.
+  </td>
+</tr>
 </table>
 
 ### Networking