Enabling tests that were disabled due to ISPN-2106 (no longer relevant on 5.2 and tests seem to work)
ISPN-2777 ReplicatedConsistentHash.isKeyLocalToNode(node, key) should return false if the node is not a member yet

Also added some sanity checks to detect illegal usage.
Fix PutForExternalReadTest.testExceptionSuppression and resolve some generics related compiler warnings.
ISPN-2757 ReplaceCommand in REPL mode cluster does not perform any modifications if the entry was not yet transfered during rehashing

 ReplicationInterceptor needs to be smart an if the command is conditional but the affected value is not yet available locally because state transfer did not have the chance to fetch it yet then we should fetch it now.