rename topology related objects: Device -> Host

- KVDevice to be renamed later.
- Use fully qualified name for topology's Host. (HostManager.java)

Change-Id: I1538f96d7ca93ca2197d23e5a69b85d284611412
diff --git a/src/main/java/net/onrc/onos/core/topology/TopologyEvents.java b/src/main/java/net/onrc/onos/core/topology/TopologyEvents.java
index e553836..1900132 100644
--- a/src/main/java/net/onrc/onos/core/topology/TopologyEvents.java
+++ b/src/main/java/net/onrc/onos/core/topology/TopologyEvents.java
@@ -37,8 +37,8 @@
     private final Collection<PortEvent> removedPortEvents;
     private final Collection<LinkEvent> addedLinkEvents;
     private final Collection<LinkEvent> removedLinkEvents;
-    private final Collection<DeviceEvent> addedHostEvents;
-    private final Collection<DeviceEvent> removedHostEvents;
+    private final Collection<HostEvent> addedHostEvents;
+    private final Collection<HostEvent> removedHostEvents;
 
     /**
      * Constructor.
@@ -61,8 +61,8 @@
                           Collection<PortEvent> removedPortEvents,
                           Collection<LinkEvent> addedLinkEvents,
                           Collection<LinkEvent> removedLinkEvents,
-                          Collection<DeviceEvent> addedHostEvents,
-                          Collection<DeviceEvent> removedHostEvents) {
+                          Collection<HostEvent> addedHostEvents,
+                          Collection<HostEvent> removedHostEvents) {
         // CHECKSTYLE:ON
         this.timestamp = timestamp;
         this.addedSwitchEvents =
@@ -151,7 +151,7 @@
      *
      * @return the collection of added Host Events.
      */
-    public Collection<DeviceEvent> getAddedHostEvents() {
+    public Collection<HostEvent> getAddedHostEvents() {
         return addedHostEvents;
     }
 
@@ -160,7 +160,7 @@
      *
      * @return the collection of removed Host Events.
      */
-    public Collection<DeviceEvent> getRemovedHostEvents() {
+    public Collection<HostEvent> getRemovedHostEvents() {
         return removedHostEvents;
     }
 }