title: conditionally execute maven plugins
body: <p>I have some Maven plugins configured in my pom.xml. I only want to execute these plugins if the tests are being run (tests may be skipped using either <code>-Dmaven.test.skip=true</code> or <code>-DskipTests</code>).</p>
  
  <p>One of these plugins is bound to the <code>process-classes</code> build lifecycle phase and the other is bound to the <code>pre-integration-test</code> phase.</p>