SPARK-3223 runAsSparkUser cannot change HDFS write permission properly i...

...n mesos cluster mode

- change master newer

Author: Jongyoul Lee <jongyoul@gmail.com>

Closes #3034 from jongyoul/SPARK-3223 and squashes the following commits:

42b2ed3 [Jongyoul Lee] SPARK-3223 runAsSparkUser cannot change HDFS write permission properly in mesos cluster mode - change master newer

(cherry picked from commit f7ac8c2b1de96151231617846b7468d23379c74a)
Signed-off-by: Andrew Or <andrew@databricks.com>