redirect test output to file

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1780126 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 5be9f55..d3f8ddb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -300,6 +300,7 @@
           </execution>
         </executions>
         <configuration>
+          <redirectTestOutputToFile>true</redirectTestOutputToFile>
           <systemProperties>
             <property>
               <name>bundle.filename</name>