Rename some interfaces

.../java/net/floodlightcontroller/devicemanager/IDevice.java

...t/floodlightcontroller/devicemanager/IDeviceListener.java

...et/floodlightcontroller/devicemanager/IDeviceService.java

.../net/floodlightcontroller/devicemanager/IEntityClass.java

...floodlightcontroller/devicemanager/IEntityClassifier.java

...oller/devicemanager/internal/DefaultEntityClassifier.java

...t/floodlightcontroller/devicemanager/internal/Device.java

...odlightcontroller/devicemanager/internal/DeviceIndex.java

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

...htcontroller/devicemanager/internal/DeviceMultiIndex.java

...tcontroller/devicemanager/internal/DeviceUniqueIndex.java

...lightcontroller/devicemanager/internal/IndexedEntity.java

.../java/net/floodlightcontroller/forwarding/Forwarding.java

...java/net/floodlightcontroller/routing/ForwardingBase.java

...troller/devicemanager/internal/DeviceManagerImplTest.java

...lightcontroller/devicemanager/test/MockDeviceManager.java

...a/net/floodlightcontroller/forwarding/ForwardingTest.java

...ava/net/floodlightcontroller/test/FloodlightTestCase.java