VERIFY_SUSPECT2

VERIFY_SUSPECT adds suspected members into a DelayQueue and a separate thread removes elements until the queue is empty.
If we add suspects A and B a few milliseconds apart, then we'll remove 2 separate entries, and thus create 2 separate views.
It would be better if we could use some time-wheel based mechanism which batches suspects that are a few milliseconds (configurable) apart, hence we'd create only 1 view change instead of 2.