[MPOM-69] avoid Rat plugin warning

git-svn-id: https://svn.apache.org/repos/asf/maven/pom/trunk@1659746 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/asf/pom.xml b/asf/pom.xml
index fb54619..18c1eb8 100644
--- a/asf/pom.xml
+++ b/asf/pom.xml
@@ -262,6 +262,19 @@
           <groupId>org.apache.rat</groupId>
           <artifactId>apache-rat-plugin</artifactId>
           <version>0.11</version>
+          <dependencies><!-- see https://issues.apache.org/jira/browse/RAT-158 -->
+            <dependency>
+              <groupId>org.apache.maven.doxia</groupId>
+              <artifactId>doxia-core</artifactId>
+              <version>1.6</version>
+              <exclusions>
+                <exclusion>
+                  <groupId>xerces</groupId>
+                  <artifactId>xercesImpl</artifactId>
+                </exclusion>
+              </exclusions>
+            </dependency>
+          </dependencies>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>