FLUME-1594. Document JMX options
FLUME-1594. Document JMX options

(Ashish Paliwal via Roshan Naik)

tmgstevens/flume,tinawenqiao/flume,szaboferee/flume,iaiengxia/flume,tmgstevens/flume,szaboferee/flume,szaboferee/flume,tmgstevens/flume,szaboferee/flume,tinawenqiao/flume,tmgstevens/flume,tinawenqiao/flume,iaiengxia/flume,iaiengxia/flume,tinawenqiao/flume,iaiengxia/flume