Add default cases to get rid of warnings when using the newest version of Eclipse.

...in/java/net/floodlightcontroller/counter/CountSeries.java

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

...ntroller/linkdiscovery/internal/LinkDiscoveryManager.java

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

...ightcontroller/staticflowentry/StaticFlowEntryPusher.java

...va/net/floodlightcontroller/topology/TopologyManager.java

...dlightcontroller/virtualnetwork/VirtualNetworkFilter.java