JUM-41: 1.Made cache singleton object and clearence of cachce is added at the termination of cluster monitoring. 2.Orphan mbean  connection now pooled from JMXconnector cache. 3.Removed termination of mbean connectors
Added javadoc comment for public method getOSJMXStats
Merge pull request #20 from impetus-opensource/JUM-41

JUM-41: 1.Made cache singleton object and clearence of cachce is added a...