minor formatting changes

Change-Id: I361955b820489793ffb8f6b9b9ff24d429e1dd99
diff --git a/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java
index 2108ba4..4fa961f 100644
--- a/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java
+++ b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java
@@ -323,8 +323,9 @@
             ChassisId cId = new ChassisId(dpid.value());
 
             SparseAnnotations annotations = DefaultAnnotations.builder()
-                    .set("protocol", sw.factory().getVersion().toString())
-                    .set("channelId", sw.channelId())
+                    .set(AnnotationKeys.PROTOCOL, sw.factory().getVersion().toString())
+                    .set(AnnotationKeys.CHANNEL_ID, sw.channelId())
+                    .set(AnnotationKeys.MANAGEMENT_ADDRESS, sw.channelId().split(":")[0])
                     .build();
 
             DeviceDescription description =