ISPN-4372 Map/Reduce performance is dependent on cache value size
ISPN-4440 Remove setMaxCollectorSize API from MapReduceTask
ISPN-3981 Enhance grouping API to support group manipulation methods

* First implementation. Added getGroup() and removeGroup() methods
ISPN-4452 DummyInMemoryStore should respect fetch arguments on process method.
Use the proper configuration for the remote executor
Move the up handler deregistration to CommandAwareRpcDispatcher.stop
Logging improvements
TODO
Fix TestingUtil.clearContent for secure cache managers