This makes the smscb_message_fsm receive immediate notice that this peer failed to deliver the message, avoiding need to wait for 10 seconds timeout. Change-Id: I1f3911accb327f3378d65902d53d86fb298fd528
This further simplifies tracking of events and simplifies and clears code on each of the FSMs. Change-Id: I0fd00b60cdc6bc6a088be1336d849548ca89c847