nextcloud: add defaults.config.php

basic/clusters/production/apps-kustomization.yaml

 apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
 kind: Kustomization
 metadata:
-  name: examle-apps
+  name: apps
   namespace: stackspout
 spec:
   interval: 10m

basic/overrides/stackspin-nextcloud-override.yaml

@@ -6,6 +6,17 @@ metadata:
   name: stackspin-nextcloud-override
 data:
   values.yaml: |
+    nextcloud:
+      configs:
+        defaults.config.php: |-
+          <?php
+          $CONFIG = array (
+            'allow_user_to_change_display_name' => false,
+            'default_phone_region' => 'DE',
+            'default_locale' => 'de',
+            #'defaultapp' => 'dashboard,files',
+            #'default_language' => 'en',
+          );
     apps:
       # Basics
       - name: password_policy