Improve on 5 min AAE+ownership change stall

The hard coded default has been changed from 5 minutes to 1 minute.
Also, usage of the FSM timeout mechanism that could lead to the FSM
ending up stuck forever has been changed to gen_fsm:send_event_after
Merge pull request #971 from basho/bugfix/aae-ownership-5-min-stall

Improve on 5 min AAE+ownership change stall

Reviewed-by: jtuple