title: How to suppress/control logging of Wagon-FTP Maven extension?
body: <p>I'm deploying Maven site by FTP, using <a href="http://maven.apache.org/wagon/wagon-providers/wagon-ftp/" rel="nofollow">Wagon-FTP</a>. Works fine, but output is full of FTP connection/authentication details, which effectively expose logins and passwords to everybody (especially if the project is open source and its CI protocols are publicly accessible):</p>
  
  <pre><code>[...]
  [INFO] 
  [INFO] --- maven-site-plugin:3.0-beta-3:deploy (default-deploy) @ rempl ---
  Reply received: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
  220-You are user number 1 of 50 allowed.
  220-Local time is now 09:08. Server port: 21.
  220 You will be disconnected after 15 minutes of inactivity.
  
  Command sent: USER ****
  
  Reply received: 331 User **** OK. Password required
  
  Command sent: PASS ********
  
  Reply received: 230-User **** has group access to: ***
  230 OK. Current restricted directory is /
  [...]
  </code></pre>
  
  <p>Is it possible to suppress this logging? Or configure it... This is a section of my <code>pom.xml</code>, where Wagon-FTP is used:</p>
  
  <pre><code>[...]
  &lt;build&gt;
      &lt;extensions&gt;
          &lt;extension&gt;
              &lt;groupId&gt;org.apache.maven.wagon&lt;/groupId&gt;
              &lt;artifactId&gt;wagon-ftp&lt;/artifactId&gt;
              &lt;version&gt;1.0-beta-7&lt;/version&gt;
          &lt;/extension&gt;
      &lt;/extensions&gt;
      [...]
  &lt;/build&gt;
  [...]
  </code></pre>