[ONOS-7731] Add a set of interfaces for openstack vTap app

Change-Id: Ic44030a996bb6c3d5883acfdb3ac310a290682f6
diff --git a/apps/openstackvtap/app/pom.xml b/apps/openstackvtap/app/pom.xml
index 800c3ed..f8b40b4 100644
--- a/apps/openstackvtap/app/pom.xml
+++ b/apps/openstackvtap/app/pom.xml
@@ -158,6 +158,12 @@
 
         <dependency>
             <groupId>org.onosproject</groupId>
+            <artifactId>onos-core-serializers</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
             <artifactId>onos-rest</artifactId>
             <version>${project.version}</version>
             <classifier>tests</classifier>