[MDEP-453] Change Maven prerequisite to 2.2.1

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1616850 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 9f7b596..e4e46e4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -78,7 +78,7 @@
   </contributors>
 
   <properties>
-    <mavenVersion>2.0.9</mavenVersion>
+    <mavenVersion>2.2.1</mavenVersion>
     <doxiaVersion>1.4</doxiaVersion>
     <pluginTestingVersion>2.1</pluginTestingVersion>
     <mavenPluginPluginVersion>3.2</mavenPluginPluginVersion>