ISPN-4519 Prepare should be broadcasted to entire cluster in replicated mode

Command should be sent to null even if not all caches are members
ISPN-4517 RollbackCommands should ignore leavers
ISPN-4484 fix caused unnecessary InterruptedExceptions

When state transfer is over, the response to the last StateResponseCommand
could reach the provider node after the CH_UPDATE from the coordinator.

If that happens, no data is lost, but the OutboundTransferTask thread is
interrupted and it logs the InterruptedException stack trace.
ISPN-3950 Move KeyValueFilterFactory and ConverterFactory to core

* Moved to core/ to make it easier for users to implement factory
instances and avoid leaking server/hotrod components.
ISPN-3950 WIP...

* Basic event notification and event filtering working when deploying
to server.
* Adding filters and converters done dynamically now, to make it easier
to deal with deployments of these.
* Servlet deployment disabled for HotRod tests in server because it
forces deployment jars to be included within war. Instead, use JMX
deployment.