added hector and cql data source reader based unit tests
updated surefile maven plugin versions
Role based permission model for Cassandra environments SS-409
Merge pull request #87 from harsha89/SS-409

Role based permission model for Cassandra environments SS-409
upgrade cql to version 2.1.3 and added orbit dependency of cassandra-thrift which is needed for hector as it cassandra and jackson dependencies removed from latest version of cql driver. With the latest upgrade there is no need of ussing cql orbit version