[SPARK-21376][YARN] Fix yarn client token expire issue when cleaning the...

[SPARK-21376][YARN] Fix yarn client token expire issue when cleaning the staging files in long running scenario

## What changes were proposed in this pull request?

This issue happens in long running application with yarn cluster mode, because yarn#client doesn't sync token with AM, so it will always keep the initial token, this token may be expired in the long running scenario, so when yarn#client tries to clean up staging directory after application finished, it will use this expired token and meet token expire issue.

## How was this patch tested?

Manual verification is secure cluster.

Author: jerryshao <sshao@hortonworks.com>

Closes #18617 from jerryshao/SPARK-21376.