Add info provider interface floodlight and implement controller/summary info

...floodlightcontroller/core/IFloodlightProviderService.java

...ain/java/net/floodlightcontroller/core/IInfoProvider.java

...va/net/floodlightcontroller/core/internal/Controller.java

...odlightcontroller/core/web/ControllerSummaryResource.java

...va/net/floodlightcontroller/core/web/CoreWebRoutable.java

...tcontroller/devicemanager/internal/DeviceManagerImpl.java

.../floodlightcontroller/topology/internal/TopologyImpl.java

...loodlightcontroller/core/test/MockFloodlightProvider.java