Adding an option to install a certificate from the CA certificate menu

For CA ceritificate we only can install in Network Preferences > Advaned
> Install certificates. So we add the option for user to install when
you setup the wifi network. After you install the certificate, you can
see the certificate in your menu.

Bug: 176998563
Test: manual test
make RunSettingsRoboTests ROBOTEST_FILTER=WifiConfigController2Test

Change-Id: I532b12f9277c6a15c649907fa3711c807566c88e

src/com/android/settings/wifi/AddNetworkFragment.java

@@ -85,6 +85,13 @@ public class AddNetworkFragment extends InstrumentedFragment implements WifiConf
         return rootView;
     }
 
+    @Override
+    public void onResume() {
+        super.onResume();
+        mUIController.showSecurityFields(
+            /* refreshEapMethods */ false, /* refreshCertificates */ true);
+    }
+
     @Override
     public void onViewStateRestored(Bundle savedInstanceState) {
         super.onViewStateRestored(savedInstanceState);
@@ -110,7 +117,6 @@ public class AddNetworkFragment extends InstrumentedFragment implements WifiConf
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
-
         if (requestCode == REQUEST_CODE_WIFI_DPP_ENROLLEE_QR_CODE_SCANNER) {
             if (resultCode != Activity.RESULT_OK) {
                 return;