title: Flume "OR Regex" Filtering Interceptor
body: <p>I'm a newbie with Flume and I can't find enough information about regular expressions – that's why I need help with this.</p>
  
  <p>I'm trying to make a Regex Filtering Interceptor.</p>
  
  <p>I have some events like these: </p>
  
  <pre><code>[20151010][type1][stuff]
  [20151011][type2][stuff]
  [20151012][type3][stuff]
  [20151013][type4][stuff]
  [20151014][type1][stuff]
  [20151015][type2][stuff]
  [20151016][type3][stuff]
  </code></pre>
  
  <p>I would like to make a regex filter to include type1 and type2. </p>
  
  <p>The result should be:</p>
  
  <pre><code>[20151010][type1][stuff]
  [20151011][type2][stuff]
  [20151014][type1][stuff]
  [20151015][type2][stuff]
  </code></pre>
  
  <p>Is it possible to make just 1 filter? 
  Or maybe should I multiplex the information and make two different filters?</p>