[maven-scm] copy for tag maven-site-plugin-2.1

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/tags/maven-site-plugin-2.1@891915 13f79535-47bb-0310-9956-ffa450edef68

pom.xml

@@ -25,7 +25,7 @@ under the License.
   <parent>
     <groupId>org.apache.maven.plugins</groupId>
     <artifactId>maven-plugins</artifactId>
-    <version>14</version>
+    <version>16</version>
   </parent>
 
   <artifactId>maven-site-plugin</artifactId>