SLING-2798 - explicit dependency

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1553128 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index a7b7b4d..5c50ccd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -265,8 +265,11 @@
             <artifactId>org.apache.sling.api</artifactId>
             <version>2.4.2</version>
         </dependency>
-
-
+        <dependency>
+            <groupId>org.apache.sling</groupId>
+            <artifactId>org.apache.sling.commons.testing</artifactId>
+            <version>2.0.16</version>
+        </dependency>
     </dependencies>
 
 </project>