Add a block hound exception for the OperationSubmitter#submitToQueue method

With Infinispan the implementation is OffloadingExecutorOperationSubmitter.
Here the submitToQueue method invokes, the single argument one, that uses the lock of the blocking queue just to check safely the size of the data structure,
releasing immediately the lock after this super-short check.
Moreover, probably this should fix several indexing (in particular mass-indexing) flaky tests.