title: fluentd: one source for several filters and matches
body: <p>I have source: </p>
  
  <pre><code>&lt;source&gt;
      @type tail
      tag service
      path /tmp/l.log
      format json
      read_from_head true
  &lt;/source&gt;
  </code></pre>
  
  <p>I would like to make several filters on it and <code>match</code> it to several outputs:</p>
  
  <pre><code>&lt;source&gt;
      @type tail
      tag service.pi2
      path /tmp/out.log
      format json
      read_from_head true
  &lt;/source&gt;
  
  &lt;source&gt;
      @type tail
      tag service.data
      path /tmp/out.log
      format json
      read_from_head true
  &lt;/source&gt;
  
  &lt;filter service.data&gt;
     # some filtering
  &lt;/filter&gt;
  
  &lt;filter service.pi2&gt;
     # some filtering
  &lt;/filter&gt;
  
  &lt;match service.data&gt;
    @type file
    path /tmp/out/data
  &lt;/match&gt;
  
  &lt;match service.pi2&gt;
    @type file
    path /tmp/out/pi
  &lt;/match&gt;
  </code></pre>
  
  <p>So far, to make everything working I have to duplicate <code>source</code> with different tags. Can I make it working from one source definition?</p>