Initial stubbing out of new device manager

...n/java/net/floodlightcontroller/devicemanager/Device.java

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

...et/floodlightcontroller/devicemanager/IDeviceManager.java

...oodlightcontroller/devicemanager/IDeviceManagerAware.java

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

...floodlightcontroller/devicemanager/IEntityClassifier.java

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

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

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

...t/floodlightcontroller/devicemanager/internal/Entity.java

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

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

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

...va/net/floodlightcontroller/routing/IRoutingDecision.java

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

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

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