Renamed devicemanager, flowprogrammer, linkdiscovery and util packages

net.onrc.onos.ofcontroller.devicemanager.* => net.onrc.onos.core.devicemanager.*
net.onrc.onos.ofcontroller.flowprogrammer.* => net.onrc.onos.core.flowprogrammer.*
net.onrc.onos.ofcontroller.linkdiscovery.* => net.onrc.onos.core.linkdiscovery.*
net.onrc.onos.ofcontroller.util.* => net.onrc.onos.core.util.*

Change-Id: Iaa865af552e8fb3a589e73d006569ac79f5a0f08
diff --git a/src/main/java/net/onrc/onos/ofcontroller/networkgraph/TopologyManager.java b/src/main/java/net/onrc/onos/ofcontroller/networkgraph/TopologyManager.java
index 732265e..d002c2e 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/networkgraph/TopologyManager.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/networkgraph/TopologyManager.java
@@ -20,8 +20,8 @@
 import net.onrc.onos.core.datastore.topology.KVLink;
 import net.onrc.onos.core.datastore.topology.KVPort;
 import net.onrc.onos.core.datastore.topology.KVSwitch;
+import net.onrc.onos.core.util.EventEntry;
 import net.onrc.onos.ofcontroller.networkgraph.PortEvent.SwitchPort;
-import net.onrc.onos.ofcontroller.util.EventEntry;
 import net.onrc.onos.registry.controller.IControllerRegistryService;
 
 import org.slf4j.Logger;