chore: improve redis/doctrine configuration

spec out REDIS_DOCTRINE_DATABASE for doctrine cache

Signed-off-by: smarcet@gmail.com <smarcet@gmail.com>
Change-Id: Ia3d2e23b2da80c8260cf79a57f52e14275fcc7e8

Author: smarcet

config/database.php

@@ -138,6 +138,14 @@
             'timeout' => env('REDIS_TIMEOUT', 30.0),
             'scheme' => env('REDIS_SCHEME', 'tcp'),
         ],
+        'doctrine' => [
+            'host' => env('REDIS_HOST'),
+            'port' => env('REDIS_PORT'),
+            'database' => env('REDIS_DOCTRINE_DATABASE', 5),
+            'password' => env('REDIS_PASSWORD'),
+            'timeout' => env('REDIS_TIMEOUT', 30.0),
+            'scheme' => env('REDIS_SCHEME', 'tcp'),
+        ],
     ],
     'allow_disabled_pk' => env('ALLOW_DISABLED_PK', false),
 ];

config/doctrine.php

@@ -220,8 +220,9 @@
     |
     */
     'cache'                     => [
-        'default'                => env('DOCTRINE_CACHE', 'redis'),
-        'namespace'              => null,
+        // see https://github.com/OpenStackweb/openstackid/blob/main/config/database.php#L141
+        'default'                => env('DOCTRINE_CACHE', 'doctrine'),
+        'namespace'              => "idp",
         'second_level'           => [
             'enabled'                => true,
             'region_lifetime'        => 3600,