Set relative path

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1673672 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 005de3b..a09cb2b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,6 +25,7 @@
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
         <version>22</version>
+        <relativePath/>
     </parent>
 
     <artifactId>org.apache.sling.validation.test-services</artifactId>