title: ADB Install Fails With INSTALL_FAILED_TEST_ONLY
body: <p>I am having issues installing an apk to my device. </p>
  
  <pre><code>adb install &lt;.apk&gt;
  </code></pre>
  
  <p>Using the above command returns the following:</p>
  
  <pre><code>5413 KB/s (99747 bytes in 0.017s)
          pkg: /data/local/tmp/AppClient.TestOnly.App3.apk
  Failure [INSTALL_FAILED_TEST_ONLY]
  </code></pre>
  
  <p>Any idea on what might cause this issue?</p>
  
  <p>It definitely recognizes the device.  Could it be an issue with the apk?</p>