improved rat config: ignore only expected IT results

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@1595965 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 74eb8f5..8421bf1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -169,12 +169,10 @@
         <artifactId>apache-rat-plugin</artifactId>
         <configuration>
           <excludes>
-            <exclude>src/test/resources*/**</exclude>
-            <exclude>src/test/projects/**</exclude>
-            <exclude>src/test/remote-repo/**</exclude>             
-            <exclude>**/*.odg</exclude>
-            <exclude>**/download.cgi</exclude>
-            <exclude>src/it/*/*.txt</exclude>
+            <!--
+              These files contains the expected output of this component and can not contain a license header.
+            -->
+            <exclude>src/it/*/expected*.txt</exclude>
           </excludes>            
         </configuration>
         <executions>