ISPN-4873 Statetransfer thread pool deadlock

* Update LargeClusterStressTest to create a large number of caches
* Make StateRequestCommand implement TopologyAffectedCommand
ISPN-4941 Re-enabling rebalancing should not start a rebalance for a cache
in degraded mode
ISPN-4137 Transaction executed multiple times due to forwarded CommitCommand

Make rollback commands synchronous
Move stuff from AbstraceEnlistmentAdapter to TransactionCoordinator.