apply networkSecurityConfig to androidTest

Author: Salakar

Diff for: ReactAndroid/src/androidTest/AndroidManifest.xml

@@ -8,7 +8,8 @@
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
   <application
-    android:hardwareAccelerated="false">
+    android:hardwareAccelerated="false"
+    android:networkSecurityConfig="@xml/rn_network_security_config">
     <activity
       android:name="com.facebook.react.testing.ReactAppTestActivity"
       android:theme="@style/Theme.ReactNative.AppCompat.Light.NoActionBar.FullScreen"