Add an OptionClass to the AndroidJUnit test.

Bug: 124770116
Test: none
Change-Id: Id0b99c5fc76461d2d1d71e9bab5079f55d978c3c
diff --git a/src/com/android/tradefed/testtype/AndroidJUnitTest.java b/src/com/android/tradefed/testtype/AndroidJUnitTest.java
index a46d85e..ae934da 100644
--- a/src/com/android/tradefed/testtype/AndroidJUnitTest.java
+++ b/src/com/android/tradefed/testtype/AndroidJUnitTest.java
@@ -20,6 +20,7 @@
 import com.android.tradefed.config.ConfigurationException;
 import com.android.tradefed.config.IConfiguration;
 import com.android.tradefed.config.Option;
+import com.android.tradefed.config.OptionClass;
 import com.android.tradefed.config.OptionCopier;
 import com.android.tradefed.device.DeviceNotAvailableException;
 import com.android.tradefed.device.ITestDevice;
@@ -47,6 +48,7 @@
  * A Test that runs an instrumentation test package on given device using the
  * android.support.test.runner.AndroidJUnitRunner.
  */
+@OptionClass(alias = "android-junit")
 public class AndroidJUnitTest extends InstrumentationTest
         implements IRuntimeHintProvider,
                 ITestFileFilterReceiver,