title: React Native app won't start when using applicationIdSuffix
body: <p>I am using <code>react-native-codepush@1.16.1-beta</code> and <a href="https://github.com/Microsoft/react-native-code-push/#android-setup" rel="noreferrer">part of the setup</a> includes specifying applicationIdSuffix. </p>
  
  <p>I've set this up on a previous app in the past with no issues (React Native 0.37). I've encountered this error twice now with this project (React Native 0.40). The first time I rebuilt my entire project and it went away. It started happening again for no apparent reason so I cloned the last stable version of my project in a fresh directory, and got the same error. </p>
  
  <p>The error occurs when using <code>react-native run-android</code>. The error happens after a successful build:</p>
  
  <pre><code>Starting: Intent { cmp=com.packagename/.MainActivity }
  Error type 3
  Error: Activity class {com.packagename/com.packagename.MainActivity} does not exist.
  </code></pre>
  
  <p>The error goes away if I remove <code>applicationIdSuffix ".debug"</code> from <code>app/build.gradle</code> and the app starts on my phone without issue.</p>
  
  <p>My phone is a Nexus 6P with Android 7.0. I've only tried on a physical device since I don't have simulators set up.</p>
  
  <p>I've triple checked everything against to my other project and I don't believe it's a configuration issue. </p>