title: Logging some request headers with DropWizard
body: <p>We're trying to add a custom http header to dropwizard access logs. We tried dropwizard 0.9.1 and 0.9.2, but can't find a way to do this. We noticed the following:</p>
  
  <ul>
  <li>server.requestlogs.appenders[file].logFormat is being ignored. It always logs using the common logging format.</li>
  <li>logging.appenders[file].logFormat is honoured, but web specific stuff results in %PARSER_ERROR[..] for things like %header{HEADER-NAME}, %A, etc.</li>
  </ul>
  
  <p>Is there a way to log such information?</p>