[league/oauth2-server-bundle] Gitignore signature keypair

[chalasr]

Q	A
License	MIT
Doc issue/PR	-

I accidentally removed them from the manifest when adding the v0.11 recipe.

[github-actions]

Thanks for the PR 😍

How to test these changes in your application

1. Define the SYMFONY_ENDPOINT environment variable:

   # On Unix-like (BSD, Linux and macOS)
   export SYMFONY_ENDPOINT=https://raw.githubusercontent.com/symfony/recipes/flex/pull-1408/index.json
   # On Windows
   SET SYMFONY_ENDPOINT=https://raw.githubusercontent.com/symfony/recipes/flex/pull-1408/index.json

2. Install the package(s) related to this recipe:

   composer req symfony/flex
   composer req 'league/oauth2-server-bundle:^0.11'

3. Don't forget to unset the SYMFONY_ENDPOINT environment variable when done:

   # On Unix-like (BSD, Linux and macOS)
   unset SYMFONY_ENDPOINT
   # On Windows
   SET SYMFONY_ENDPOINT=

Diff between recipe versions

In order to help with the review stage, I'm in charge of computing the diff between the various versions of patched recipes.
I'm going keep this comment up to date with any updates of the attached patch.

league/oauth2-server-bundle

0.4 vs 0.11

diff --git a/league/oauth2-server-bundle/0.4/config/routes/league_oauth2_server.yaml b/league/oauth2-server-bundle/0.11/config/routes/league_oauth2_server.yaml
index b874e00..38a4d1b 100644
--- a/league/oauth2-server-bundle/0.4/config/routes/league_oauth2_server.yaml
+++ b/league/oauth2-server-bundle/0.11/config/routes/league_oauth2_server.yaml
@@ -1,3 +1,3 @@
-oauth2_server:
-    resource: '@LeagueOAuth2ServerBundle/Resources/config/routes.php'
+league_oauth2_server:
+    resource: '@LeagueOAuth2ServerBundle/config/routes.php'
     type: php
diff --git a/league/oauth2-server-bundle/0.4/post-install.txt b/league/oauth2-server-bundle/0.11/post-install.txt
index 2976520..1eba7a5 100644
--- a/league/oauth2-server-bundle/0.4/post-install.txt
+++ b/league/oauth2-server-bundle/0.11/post-install.txt
@@ -1,5 +1,5 @@
   1.  Provide a key pair 
-    * Generate a private/public key pair at the locations defined in your .env file, using the value of the  OAUTH_PASSPHRASE as passphrase: https://oauth2.thephpleague.com/installation/#generating-public-and-private-keys
+    * Generate a private/public key pair by running php bin/console league:oauth2-server:generate-keypair
 
   2.  Update the database schema 
     * Update your database schema so that bundle entities can be managed by Doctrine