ISPN-4638 Add ability to remove filter/converter factories

* Extension manager service should allow for filter/converter factories
to be removed when their undeployed (via their service stop() method).
* Extension manager service should allow for Hot Rod servers to be
removed when their removed (via their service stop() method).
ISPN-2056 Add component stop exception test caused by cache store
ISPN-263 Handle cluster partitions

* More documentation fixes
* Rename isAllDataAvailable to isMissingData
ISPN-4574 PartitionHandling: consider less than numOwners partitions

Merged PartitionHandlingStrategy with RebalancePolicy -> AvailabilityStrategy