ONOS-3658 - Adding REST APIs for query and management of device keys.

Change-Id: I3c70660a15d9085409e43d2d14120d29fd5020be
diff --git a/core/common/src/main/java/org/onosproject/codec/impl/CodecManager.java b/core/common/src/main/java/org/onosproject/codec/impl/CodecManager.java
index cbed1c2..de74801 100644
--- a/core/common/src/main/java/org/onosproject/codec/impl/CodecManager.java
+++ b/core/common/src/main/java/org/onosproject/codec/impl/CodecManager.java
@@ -53,6 +53,7 @@
 import org.onosproject.net.intent.HostToHostIntent;
 import org.onosproject.net.intent.Intent;
 import org.onosproject.net.intent.PointToPointIntent;
+import org.onosproject.net.key.DeviceKey;
 import org.onosproject.net.mcast.McastRoute;
 import org.onosproject.net.meter.Band;
 import org.onosproject.net.meter.Meter;
@@ -119,6 +120,7 @@
         registerCodec(ForwardingObjective.class, new ForwardingObjectiveCodec());
         registerCodec(NextObjective.class, new NextObjectiveCodec());
         registerCodec(McastRoute.class, new McastRouteCodec());
+        registerCodec(DeviceKey.class, new DeviceKeyCodec());
         log.info("Started");
     }