In order to differentiate between intialized and other states we
introduced a new state: Init. The router is in this state only when it's
created.
We have cleaned up router status management which is now handled by
manageStatus function only.
* Changed router interface to return Advertisement channel
* Added default gateway route to the routing table if supplied
* Watch table for updates and advertise to the network
* We hash the routes on 3-tuple (Destination, Gateway, Network)
