title: 'manifestOutputDirectory' with gradle-plugin 3.3.0 not returning result
body: <p>Trying to get manifest output directory, with below code in app build.gradle</p>
  
  <pre><code>def manifestOutDir = manifestOutputDirectory
  </code></pre>
  
  <p>But instead of returning directory path, when I run build and print it, it shows this string</p>
  
  <pre><code>property(interface org.gradle.api.file.Directory, transform(property(interface org.gradle.api.file.Directory,
  ...
  </code></pre>
  
  <p>I am using gradle-plugin-3.3.0 with 
  Android Studio 3.3</p>
  
  <p>Is it not working with gradle-android-plugin-3.3.0 or removed? Anything else that I am missing?</p>