[MENFORCER-218] Upgrade maven-dependency-tree to 2.2


git-svn-id: https://svn.apache.org/repos/asf/maven/enforcer/trunk@1643708 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/enforcer-rules/pom.xml b/enforcer-rules/pom.xml
index 122c68e..e6857e4 100644
--- a/enforcer-rules/pom.xml
+++ b/enforcer-rules/pom.xml
@@ -86,7 +86,6 @@
     <dependency>
       <groupId>org.apache.maven.shared</groupId>
       <artifactId>maven-dependency-tree</artifactId>
-      <version>2.1</version>
     </dependency>
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
diff --git a/pom.xml b/pom.xml
index d26463b..89f4090 100644
--- a/pom.xml
+++ b/pom.xml
@@ -142,6 +142,11 @@
         <artifactId>maven-plugin-testing-harness</artifactId>
         <version>1.3</version>
       </dependency>
+      <dependency>
+        <groupId>org.apache.maven.shared</groupId>
+        <artifactId>maven-dependency-tree</artifactId>
+        <version>2.2</version>
+      </dependency>
     </dependencies>
   </dependencyManagement>