Migrate frameworks/base/packages/CarrierDefaultApp/tests/unit to androidx.test

See go/jetpack-test-android-migration

Test: make checkbuild
Change-Id: I1daac09d07b1ebddecad3ebf88af713f923ddf7d
diff --git a/packages/CarrierDefaultApp/tests/unit/AndroidManifest.xml b/packages/CarrierDefaultApp/tests/unit/AndroidManifest.xml
index 3a06a09..7a26d95 100644
--- a/packages/CarrierDefaultApp/tests/unit/AndroidManifest.xml
+++ b/packages/CarrierDefaultApp/tests/unit/AndroidManifest.xml
@@ -21,7 +21,7 @@
         <uses-library android:name="android.test.runner" />
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
         android:targetPackage="com.android.carrierdefaultapp"
         android:label="CarrierDefaultApp Unit Test Cases">
     </instrumentation>