Implement some of the missing Selector and Match Conditions

Work toward ONOS-509

The following match conditions are added/implemented:
  - IN_PHY_PORT
  - IP_DSCP
  - IP_ECN
  - METADATA

Change-Id: I6f529ee90b2b9e0d5046f83c034e8be3faf86d8b
diff --git a/web/api/src/main/java/org/onosproject/codec/impl/CriterionCodec.java b/web/api/src/main/java/org/onosproject/codec/impl/CriterionCodec.java
index 9d714b0..3c6d4d7 100644
--- a/web/api/src/main/java/org/onosproject/codec/impl/CriterionCodec.java
+++ b/web/api/src/main/java/org/onosproject/codec/impl/CriterionCodec.java
@@ -43,10 +43,17 @@
         switch (criterion.type()) {
 
             case IN_PORT:
+            case IN_PHY_PORT:
                 final Criteria.PortCriterion portCriterion = (Criteria.PortCriterion) criterion;
                 result.put("port", portCriterion.port().toLong());
                 break;
 
+            case METADATA:
+                final Criteria.MetadataCriterion metadataCriterion =
+                        (Criteria.MetadataCriterion) criterion;
+                result.put("metadata", metadataCriterion.metadata());
+                break;
+
             case ETH_DST:
             case ETH_SRC:
                 final Criteria.EthCriterion ethCriterion = (Criteria.EthCriterion) criterion;
@@ -71,6 +78,18 @@
                 result.put("priority", vlanPcpCriterion.priority());
                 break;
 
+            case IP_DSCP:
+                final Criteria.IPDscpCriterion ipDscpCriterion =
+                        (Criteria.IPDscpCriterion) criterion;
+                result.put("ipDscp", ipDscpCriterion.ipDscp());
+                break;
+
+            case IP_ECN:
+                final Criteria.IPEcnCriterion ipEcnCriterion =
+                        (Criteria.IPEcnCriterion) criterion;
+                result.put("ipEcn", ipEcnCriterion.ipEcn());
+                break;
+
             case IP_PROTO:
                 final Criteria.IPProtocolCriterion iPProtocolCriterion =
                         (Criteria.IPProtocolCriterion) criterion;