Make dhcpleased(8) always configure provided routes, regardless of

Make dhcpleased(8) always configure provided routes, regardless of
whether the address we received in our lease is already configured.

In the case I observed, no default route was added to the routing table
even though the server provided both an address and a route option.
As it happened the leased address was already configured on the interface.
This should not prevent routing table updates, but it did.

ok florian