Merge "Exempt tests from hidden API checks." into pi-dev

    <test class="com.android.tradefed.testtype.AndroidJUnitTest" >

        <option name="package" value="com.android.frameworks.telephonytests" />

        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />

        <option name="hidden-api-checks" value="false"/>

    </test>

</configuration>