Travis-CI build failed, "You have not accepted the license agreements"
<p>I have the following Travis-CI configuration:</p>

<pre><code>language: android
jdk: oraclejdk8
android:
  components:
  - build-tools-22.0.1
  - android-22
  - extra-google-m2repository
before_install:
- openssl aes-256-cbc -K $encrypted_8bf9e2e639dc_key -iv $encrypted_8bf9e2e639dc_iv
  -in secrets.tar.enc -out secrets.tar -d
- tar xvf secrets.tar
- chmod +x gradlew
</code></pre>

<p>When it tries to build i get the following error: </p>

<pre><code>FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring project ':app'.
&gt; You have not accepted the license agreements of the following SDK components:
  [ConstraintLayout for Android 1.0.0-alpha7, Solver for ConstraintLayout 1.0.0-alpha7].
  Before building your project, you need to accept the license agreements and complete the installation of the missing components using the Android Studio SDK Manager.
  Alternatively, to learn how to transfer the license agreements from one workstation to another, go to http://d.android.com/r/studio-ui/export-licenses.html
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 1 mins 17.927 secs
The command "./gradlew build connectedCheck" exited with 1.
Done. Your build exited with 1.
</code></pre>

<p>Now, from what the travis documentation says, travis accepts all licenses by default, so this should not be happening.</p>

<p>Is there any way to resolve this?</p>