ISPN-4601 DirectoryLoaderAdaptor computes the auto-chunk factor applying wrong rounding
ISPN-4436 Karaf stucked when running iOSGI integration tests on IBM JDK

Upgrade the PAX EXAM version in the server integration module also.
ISPN-4521 ReplicationQueueTest.testReplicationQueueMultipleThreads
random failures

* Updated test to use proper assertions
* Changed test to use eventually
* Changed test threading to use thread pool
ISPN-4548 Revamped AbstractIninfispanTest threading handling.

* Also fixed up erroneous use of CountDownLatch to try to have threads
* run at the same time.
ISPN-4597 Include test verifying correct semantics during an XA transaction
ISPN-2932 Verify that preloading a read only index in a cache will never hit the cacheloader
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 Allow deployment of event filters and converters in 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.
* Updated documentation to reflect how filter and converter instances
are plugging into Infinispan Server.