Moved controller port flows from route manager to interface manager.
Create router ingress flows for simulated interfaces in interface manager if 'enable_router_ingress' event is received.
Use interface type instead of network type in router ingress table.
Switch route manager to the new packet in handling method.
Renamed TABLE_ROUTER_EGRESS to TABLE_ROUTE_LINK.
Merge remote branch 'origin/master' into refactor-route-manager
Created an interface classifier table to disassociate port type and interface handling.
Create common flows for vif and simulated interface types in TABLE_INTERFACE_CLASSIFIER.
Merge pull request #136 from axsh/refactor-route-manager

Refactor route manager