Reset UTCP timers when learning a node's public key.

Reset UTCP timers when learning a node's public key.

If we try to open a channel to a node whose public key we do not yet
have, a REQ_KEY request is sent out. When the answer comes back we know
the key, but we have to tell UTCP to reset the timers, otherwise we have
to wait for a retransmission timeout to occur before resending the SYN
packet.