Renamed SouthboundNetworkGraph to NetworkGraphDatastore, as this will sit inside the NetworkGraph module and write to the datastore

Change-Id: I334c6519f218533cc8b913f480f69be4794dcd2a
diff --git a/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/RCNetworkGraphPublisher.java b/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/RCNetworkGraphPublisher.java
index 5bc5b7c..1ae616d 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/RCNetworkGraphPublisher.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/RCNetworkGraphPublisher.java
@@ -18,7 +18,7 @@
 import net.onrc.onos.ofcontroller.networkgraph.INetworkGraphService;
 import net.onrc.onos.ofcontroller.networkgraph.LinkImpl;
 import net.onrc.onos.ofcontroller.networkgraph.NetworkGraph;
-import net.onrc.onos.ofcontroller.networkgraph.SouthboundNetworkGraph;
+import net.onrc.onos.ofcontroller.networkgraph.NetworkGraphDatastore;
 import net.onrc.onos.ofcontroller.networkgraph.Switch;
 import net.onrc.onos.ofcontroller.util.Dpid;
 import net.onrc.onos.registry.controller.IControllerRegistryService;
@@ -50,7 +50,7 @@
 	private INetworkGraphService networkGraphService;
 
 	private NetworkGraph networkGraph;
-	private SouthboundNetworkGraph southboundNetworkGraph;
+	private NetworkGraphDatastore southboundNetworkGraph;
 
 
 	@Override