added a setter

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@25745 71c3de6d-444a-0410-be80-ed276b4c234a

maven-plugin/src/main/java/hudson/maven/MavenModuleSet.java

@@ -584,6 +584,14 @@ public final class MavenModuleSet extends AbstractMavenProject<MavenModuleSet,Ma
         return alternateSettings;
     }
 
+    /**
+     * Sets the workspace-relative path to an alternative Maven settings.xml file.
+     */
+    public void setAlternateSettings(String alternateSettings) throws IOException {
+        this.alternateSettings = alternateSettings;
+        save();
+    }
+
     /**
      * If the list of configured goals contain the "-P" option,
      * return the configured profiles. Otherwise null.