Migrate cts/hostsidetests to androidx.test

See go/jetpack-test-android-migration

Test: make cts; atest CtsDexMetadataHostTestCases
CtsAppSecurityHostTestCases
Exempt-From-Owner-Approval: mechanical automated package name refactoring
Change-Id: I87228b09384f759d0702270ca26ed9010072e6bf
diff --git a/hostsidetests/appsecurity/test-apps/EphemeralTestApp/ImplicitlyExposedApp/AndroidManifest.xml b/hostsidetests/appsecurity/test-apps/EphemeralTestApp/ImplicitlyExposedApp/AndroidManifest.xml
index f202a0a..d9136d5 100644
--- a/hostsidetests/appsecurity/test-apps/EphemeralTestApp/ImplicitlyExposedApp/AndroidManifest.xml
+++ b/hostsidetests/appsecurity/test-apps/EphemeralTestApp/ImplicitlyExposedApp/AndroidManifest.xml
@@ -38,6 +38,6 @@
     </application>
 
     <instrumentation
-        android:name="android.support.test.runner.AndroidJUnitRunner"
+        android:name="androidx.test.runner.AndroidJUnitRunner"
         android:targetPackage="com.android.cts.implicitapp" />
 </manifest>