feature #31309 [SecurityBundle] add "service" option in remember_me firewall (Pchol)

This PR was squashed before being merged into the 5.1-dev branch.

Discussion
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[SecurityBundle] add "service" option in remember_me firewall

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        | symfony/symfony-docs#... <!-- required for new features -->

allow override remember me service

Commits
-------

bbf7421a92 [SecurityBundle] add "service" option in remember_me firewall

src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php

@@ -44,7 +44,10 @@ class RememberMeFactory implements SecurityFactoryInterface
         ;
 
         // remember me services
-        if (isset($config['token_provider'])) {
+        if (isset($config['service'])) {
+            $templateId = $config['service'];
+            $rememberMeServicesId = $templateId.'.'.$id;
+        } elseif (isset($config['token_provider'])) {
             $templateId = 'security.authentication.rememberme.services.persistent';
             $rememberMeServicesId = $templateId.'.'.$id;
         } else {
@@ -135,6 +138,7 @@ class RememberMeFactory implements SecurityFactoryInterface
 
         $builder
             ->scalarNode('secret')->isRequired()->cannotBeEmpty()->end()
+            ->scalarNode('service')->end()
             ->scalarNode('token_provider')->end()
             ->arrayNode('user_providers')
                 ->beforeNormalization()