[SPARK-20385][WEB-UI] Submitted Time' field, the date format needs to be formatted, in running Drivers table or Completed Drivers table in master web ui.

## What changes were proposed in this pull request?
Submitted Time' field, the date format **needs to be formatted**, in running Drivers table or Completed Drivers table in master web ui.
Before fix this problem  e.g.

Completed Drivers
Submission ID	             **Submitted Time**  	             Worker	                            State	   Cores	   Memory	       Main Class
driver-20170419145755-0005	 **Wed Apr 19 14:57:55 CST 2017**	 worker-20170419145250-zdh120-40412	FAILED	   1	       1024.0 MB	   cn.zte.HdfsTest

please see the  attachment:https://issues.apache.org/jira/secure/attachment/12863977/before_fix.png

After fix this problem e.g.

Completed Drivers
Submission ID	             **Submitted Time**  	             Worker	                            State	   Cores	   Memory	       Main Class
driver-20170419145755-0006	 **2017/04/19 16:01:25**	 worker-20170419145250-zdh120-40412	         FAILED	   1	       1024.0 MB	   cn.zte.HdfsTest

please see the  attachment:https://issues.apache.org/jira/secure/attachment/12863976/after_fix.png

'Submitted Time' field, the date format **has been formatted**, in running Applications table or Completed Applicationstable in master web ui, **it is correct.**
e.g.
Running Applications
Application ID	                Name	                Cores	Memory per Executor	   **Submitted Time**	      User	   State	        Duration
app-20170419160910-0000 (kill)	SparkSQL::10.43.183.120	1	    5.0 GB	               **2017/04/19 16:09:10**	  root	   RUNNING	    53 s

**Format after the time easier to observe, and consistent with the applications table,so I think it's worth fixing.**

## How was this patch tested?

(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)

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 #17682 from guoxiaolongzte/SPARK-20385.

core/src/main/scala/org/apache/spark/deploy/master/ui/ApplicationPage.scala

@@ -83,7 +83,7 @@ private[ui] class ApplicationPage(parent: MasterWebUI) extends WebUIPage("app")
               <strong>Executor Memory:</strong>
               {Utils.megabytesToString(app.desc.memoryPerExecutorMB)}
             </li>
-            <li><strong>Submit Date:</strong> {app.submitDate}</li>
+            <li><strong>Submit Date:</strong> {UIUtils.formatDate(app.submitDate)}</li>
             <li><strong>State:</strong> {app.state}</li>
             {
               if (!app.isFinished) {

core/src/main/scala/org/apache/spark/deploy/master/ui/MasterPage.scala

@@ -252,7 +252,7 @@ private[ui] class MasterPage(parent: MasterWebUI) extends WebUIPage("") {
     }
     <tr>
       <td>{driver.id} {killLink}</td>
-      <td>{driver.submitDate}</td>
+      <td>{UIUtils.formatDate(driver.submitDate)}</td>
       <td>{driver.worker.map(w =>
         if (w.isAlive()) {
           <a href={UIUtils.makeHref(parent.master.reverseProxy, w.id, w.webUiAddress)}>

resource-managers/mesos/src/main/scala/org/apache/spark/deploy/mesos/ui/DriverPage.scala

@@ -101,7 +101,7 @@ private[ui] class DriverPage(parent: MesosClusterUI) extends WebUIPage("driver")
       </tr>
       <tr>
         <td>Launch Time</td>
-        <td>{state.startDate}</td>
+        <td>{UIUtils.formatDate(state.startDate)}</td>
       </tr>
       <tr>
         <td>Finish Time</td>
@@ -154,7 +154,7 @@ private[ui] class DriverPage(parent: MesosClusterUI) extends WebUIPage("driver")
       <td>Memory</td><td>{driver.mem}</td>
     </tr>
     <tr>
-      <td>Submitted</td><td>{driver.submissionDate}</td>
+      <td>Submitted</td><td>{UIUtils.formatDate(driver.submissionDate)}</td>
     </tr>
     <tr>
       <td>Supervise</td><td>{driver.supervise}</td>

resource-managers/mesos/src/main/scala/org/apache/spark/deploy/mesos/ui/MesosClusterPage.scala

@@ -68,7 +68,7 @@ private[mesos] class MesosClusterPage(parent: MesosClusterUI) extends WebUIPage(
     val id = submission.submissionId
     <tr>
       <td><a href={s"driver?id=$id"}>{id}</a></td>
-      <td>{submission.submissionDate}</td>
+      <td>{UIUtils.formatDate(submission.submissionDate)}</td>
       <td>{submission.command.mainClass}</td>
       <td>cpus: {submission.cores}, mem: {submission.mem}</td>
     </tr>
@@ -88,10 +88,10 @@ private[mesos] class MesosClusterPage(parent: MesosClusterUI) extends WebUIPage(
     <tr>
       <td><a href={s"driver?id=$id"}>{id}</a></td>
       {historyCol}
-      <td>{state.driverDescription.submissionDate}</td>
+      <td>{UIUtils.formatDate(state.driverDescription.submissionDate)}</td>
       <td>{state.driverDescription.command.mainClass}</td>
       <td>cpus: {state.driverDescription.cores}, mem: {state.driverDescription.mem}</td>
-      <td>{state.startDate}</td>
+      <td>{UIUtils.formatDate(state.startDate)}</td>
       <td>{state.slaveId.getValue}</td>
       <td>{stateString(state.mesosTaskStatus)}</td>
     </tr>
@@ -101,7 +101,7 @@ private[mesos] class MesosClusterPage(parent: MesosClusterUI) extends WebUIPage(
     val id = submission.submissionId
     <tr>
       <td><a href={s"driver?id=$id"}>{id}</a></td>
-      <td>{submission.submissionDate}</td>
+      <td>{UIUtils.formatDate(submission.submissionDate)}</td>
       <td>{submission.command.mainClass}</td>
       <td>{submission.retryState.get.lastFailureStatus}</td>
       <td>{submission.retryState.get.nextRetry}</td>