A small optimization to the node setup #798
Merged
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If you have issues in your Thread network and/or multiple misbehaving devices we get trapped into a deadlock situation if we have 5 nodes stuck in setup. In that case no devices will be setup at all.
This changes the logic a tiny bit so we still use a semaphore to somewhat throttle the burst of traffic that the setup generates on the thread network but back out of it in case a node hangs in there.