Migrate packages/providers/TelephonyProvider to androidx.test

See go/jetpack-test-android-migration

Test: compile
Change-Id: If33f3423c4f47fab3ce2b7d800aa463491434892
diff --git a/tests/AndroidManifest.xml b/tests/AndroidManifest.xml
index 91e8953..59fd8bd 100644
--- a/tests/AndroidManifest.xml
+++ b/tests/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.providers.telephony"
         android:label="Tests for TelephonyProvider">
     </instrumentation>