Migrate frameworks/base/services/tests/servicestests to androidx.test

See go/jetpack-test-android-migration

cherrypicked from ag/4608401

Test: atest FrameworksServicesTests
Change-Id: I2d9641c681489135aa3167bb4c9b1296a1a6a4f7
diff --git a/services/tests/servicestests/src/com/android/server/appops/AppOpsServiceTest.java b/services/tests/servicestests/src/com/android/server/appops/AppOpsServiceTest.java
index 45e2865..4ae9bea 100644
--- a/services/tests/servicestests/src/com/android/server/appops/AppOpsServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/appops/AppOpsServiceTest.java
@@ -31,9 +31,10 @@
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Process;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;