Support double-tagged host

Change-Id: Ie4041a0b5159e7a8b3a9ed82b55ce3c26b520a3b
diff --git a/core/common/src/main/java/org/onosproject/codec/impl/HostCodec.java b/core/common/src/main/java/org/onosproject/codec/impl/HostCodec.java
index b82be46..5f8ca9d 100644
--- a/core/common/src/main/java/org/onosproject/codec/impl/HostCodec.java
+++ b/core/common/src/main/java/org/onosproject/codec/impl/HostCodec.java
@@ -40,6 +40,8 @@
                 .put("id", host.id().toString())
                 .put("mac", host.mac().toString())
                 .put("vlan", host.vlan().toString())
+                .put("innerVlan", host.innerVlan().toString())
+                .put("outerTpid", host.tpid().toString())
                 .put("configured", host.configured());
 
         final ArrayNode jsonIpAddresses = result.putArray("ipAddresses");