Adding Maven tests for apps/restconf/api

Change-Id: Ief1d9a41b2eb8d7d6478a94461244241dda4b9b4
diff --git a/apps/restconf/api/pom.xml b/apps/restconf/api/pom.xml
index cadd950..9bc8fea 100644
--- a/apps/restconf/api/pom.xml
+++ b/apps/restconf/api/pom.xml
@@ -47,6 +47,11 @@
             <groupId>org.glassfish.jersey.containers</groupId>
             <artifactId>jersey-container-servlet</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onlab-junit</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 </project>