[SPARK-20401][DOC] In the spark official configuration document, the …

…'spark.driver.supervise' configuration parameter specification and default values are necessary.

## What changes were proposed in this pull request?
Use the REST interface submits the spark job.
e.g.
curl -X  POST http://10.43.183.120:6066/v1/submissions/create --header "Content-Type:application/json;charset=UTF-8" --data'{
    "action": "CreateSubmissionRequest",
    "appArgs": [
        "myAppArgument"
    ],
    "appResource": "/home/mr/gxl/test.jar",
    "clientSparkVersion": "2.2.0",
    "environmentVariables": {
        "SPARK_ENV_LOADED": "1"
    },
    "mainClass": "cn.zte.HdfsTest",
    "sparkProperties": {
        "spark.jars": "/home/mr/gxl/test.jar",
        **"spark.driver.supervise": "true",**
        "spark.app.name": "HdfsTest",
        "spark.eventLog.enabled": "false",
        "spark.submit.deployMode": "cluster",
        "spark.master": "spark://10.43.183.120:6066"
    }
}'

**I hope that make sure that the driver is automatically restarted if it fails with non-zero exit code.
But I can not find the 'spark.driver.supervise' configuration parameter specification and default values from the spark official document.**
## How was this patch tested?

manual tests

Please review http://spark.apache.org/contributing.html before opening a pull request.

Author: 郭小龙 10207633 <guo.xiaolong1@zte.com.cn>
Author: guoxiaolong <guo.xiaolong1@zte.com.cn>
Author: guoxiaolongzte <guo.xiaolong1@zte.com.cn>

Closes #17696 from guoxiaolongzte/SPARK-20401.

docs/configuration.md

@@ -213,6 +213,14 @@ of the most common options to set are:
     and typically can have up to 50 characters.
   </td>
 </tr>
+<tr>
+  <td><code>spark.driver.supervise</code></td>
+  <td>false</td>
+  <td>
+    If true, restarts the driver automatically if it fails with a non-zero exit status.
+    Only has effect in Spark standalone mode or Mesos cluster deploy mode.
+  </td>
+</tr>
 </table>
 
 Apart from these, the following properties are also available, and may be useful in some situations: