Add a config to show the Vpn options menu.

Bug: 290124499
Test: m -j32 Settings
Change-Id: I14d59b656e917f6fb7a495f14297c594a115c018

res/values/config.xml

@@ -661,6 +661,9 @@
     <!-- Whether to enable the advanced vpn feature. The default is not to. -->
     <bool name="config_advanced_vpn_enabled">false</bool>
 
+    <!-- Whether to show the VPN options menu. The default is to show it. -->
+    <bool name="config_show_vpn_options">true</bool>
+
     <!-- An array of uid name for which packages exempt from Wi-Fi permission check. -->
     <string-array name="config_exempt_wifi_permission_uid_name" translatable="false">
         <item>@string/config_settingsintelligence_package_name</item>

src/com/android/settings/vpn2/VpnSettings.java

@@ -142,6 +142,11 @@ public class VpnSettings extends RestrictedSettingsFragment implements
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         super.onCreateOptionsMenu(menu, inflater);
+
+        if (!getContext().getResources().getBoolean(R.bool.config_show_vpn_options)) {
+            return;
+        }
+
         // Although FEATURE_IPSEC_TUNNELS should always be present in android S and beyond,
         // keep this check here just to be safe.
         if (!getContext().getPackageManager().hasSystemFeature(