use plexus-component-metadata instead of obsolete plexus-maven-plugin

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@1395337 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index f0a2224..6f2d0b6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -138,12 +138,11 @@
     <plugins>
       <plugin>
         <groupId>org.codehaus.plexus</groupId>
-        <artifactId>plexus-maven-plugin</artifactId>
-        <version>1.3.4</version>
+        <artifactId>plexus-component-metadata</artifactId>
         <executions>
           <execution>
             <goals>
-              <goal>descriptor</goal>
+              <goal>generate-metadata</goal>
             </goals>
           </execution>
         </executions>