title: How do you import config sync files in a Drupal 8 functional test?
body: <p>I would like to know how to import config sync files in my functional tests for modules I am testing. For instance, I have some custom content types I would like to test against, and there are a number of files in config/sync that pertain to the node modules that defines the custom content type.</p>
  
  <pre><code>class ArticleControllerTest extends BrowserTestBase {
      protected static $modules = ['node', 'dist_source'];
  }
  </code></pre>
  
  <p>At the top of my test I define the modules which do succesfully import, but it doesn't include the config sync settings so none of my custom content types are present. How can I import these into my test environment?</p>