Added a new mbean for better monitoring of PrestoS3FileSystem
Merge branch 'presto_s3_fs_jmx' of https://github.com/nezihyigitbasi/presto into presto_s3_fs_jmx

Conflicts:
	presto-hive/src/main/java/com/facebook/presto/hive/PrestoS3FileSystem.java