[ONOS-5884]YANG Serializer: Implement XML serializer.

Change-Id: Idffda88938d9c6c7b7c7814127a340bd2dc35039
diff --git a/serializers/json/pom.xml b/serializers/json/pom.xml
index 7a9fc74..e512f8a 100644
--- a/serializers/json/pom.xml
+++ b/serializers/json/pom.xml
@@ -60,6 +60,11 @@
             <artifactId>jackson-annotations</artifactId>
             <version>2.8.6</version>
         </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-yang-serializers-utils</artifactId>
+            <version>1.12-SNAPSHOT</version>
+        </dependency>
         <!-- TODO: remove
         <dependency>
             <groupId>org.onosproject</groupId>