#8 : add a new config property to specify the cluster name
migrate to new checkpoint
remove unnecessary code
define cluster names with given user specified cluster names
make changes in existing test case to test clusternames config property
remove unused imports
make changes in existing tests to test cluster names property
update site documentation: add clusterNames property in the MessageConsumerConfig.apt file
remove duplication of processing
fix review comments
remove class level variable
stop the consumer if user not specifies cluster names to all root dirs
revert the conf changes
Merge pull request #9 from rajubairishetti/ISSUE-8

Add the capability to remove a root dir