title: Gradle sync fails when trying to add firebase ml vision image label model
body: <p>Gradle sync fails when trying to add image label model or tensorflow with the following message:</p>
  
  <pre><code>Failed to resolve: com.google.firebase:firebase-ml-vision-image-label-model:16.0.0  
  Failed to resolve: com.google.firebase:firebase-ml-tensorflow:16.0.0    
  </code></pre>
  
  <p>Anyone know why this is happening?</p>
  
  <p>ML Vision for text extraction works fine:</p>
  
  <pre><code>com.google.firebase:firebase-ml-vision:16.0.0
  </code></pre>
  
  <p>Using AS 3.2 Canary 15 with android gradle plugin 3.2.0-alpha15 and google play services version 3.2.1.</p>