updated the maven-ipojo-plugin version

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1139557 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/ipojo/handler/whiteboard/pom.xml b/ipojo/handler/whiteboard/pom.xml
index 8ea52a8..722da8a 100644
--- a/ipojo/handler/whiteboard/pom.xml
+++ b/ipojo/handler/whiteboard/pom.xml
@@ -79,7 +79,7 @@
       <plugin>
         <groupId>org.apache.felix</groupId>
         <artifactId>maven-ipojo-plugin</artifactId>
-        <version>${project.version}</version>
+        <version>1.6.0</version>
         <executions>
           <execution>
             <goals>