title: onException and onCompletion together in RouteBuilder`s route
body: <p>I would like to use OnException &amp; OnComplition together in one route (Camel version 2.10.0.redhat-60024):</p>
  
  <pre><code>from("direct:camelTestEndpoint").
              onCompletion().
                  log("onCompletion1").
                  log("onCompletion2").
                  log("onCompletion3").
              end().
              onException(Throwable.class).
                  handled(true).
                  log("onException").
              end().
  
              log("route")
              .throwException(new RuntimeException());
  </code></pre>
  
  <p>Although it does not work as I expect.
  Exception in main route causes onComplition route to stop after first processor (it is handled in PipelineHelper`s continueProcessing() method). Camel checks if exception was handled and if yes - stops the processing.</p>
  
  <p>Output:</p>
  
  <pre><code>route
  onException
  onCompletion1
  </code></pre>
  
  <p>Is there I gentle way to say camel that it should skip this (without "CamelErrorHandlerHandled" property removal)?</p>
  
  <p>Thanks</p>