quiet some RemovedInDjango19Warning warnings (#25222)

src/authentic2/idp/management/commands/cleanupauthentic.py

@@ -1,23 +1,22 @@
 import logging
 
+from django.apps import apps
 from django.core.management.base import BaseCommand
-from django.db import models
+
 
 class Command(BaseCommand):
     help = 'Clean expired models of authentic2.'
 
     def handle(self, **options):
         log = logging.getLogger(__name__)
-
-        for app in models.get_apps():
-            for model in models.get_models(app):
+        for app in apps.get_app_configs():
+            for model in app.get_models():
                 # only models from authentic2
-                if not model.__module__.startswith('authentic2'):
-                    continue
-                try:
-                    self.cleanup_model(model)
-                except:
-                    log.exception('cleanup of model %s failed', model)
+                if model.__module__.startswith('authentic2'):
+                    try:
+                        self.cleanup_model(model)
+                    except:
+                        log.exception('cleanup of model %s failed', model)
 
     def cleanup_model(self, model):
         manager = getattr(model, 'objects', None)

src/authentic2/management/commands/load-ldif.py

@@ -97,7 +97,7 @@ class ExtraAttributeAction(argparse.Action):
 class Command(BaseCommand):
     '''Load LDAP ldif file'''
     can_import_django_settings = True
-    requires_model_validation = True
+    requires_system_checks = True
     help = 'Load/update LDIF files as users'
 
     def add_arguments(self, parser):

src/authentic2/saml/management/commands/sync-metadata.py

@@ -225,7 +225,7 @@ class Command(BaseCommand):
     and LibertyIdentityProvider files'''
     can_import_django_settings = True
     output_transaction = True
-    requires_model_validation = True
+    requires_system_checks = True
 
     help = 'Load the specified SAMLv2 metadata file'
 

src/authentic2_auth_oidc/management/commands/oidc-register-issuer.py

@@ -15,7 +15,7 @@ from django_rbac.utils import get_ou_model
 class Command(BaseCommand):
     '''Load LDAP ldif file'''
     can_import_django_settings = True
-    requires_model_validation = True
+    requires_system_checks = True
     help = 'Register an OpenID Connect OP'
 
     def add_arguments(self, parser):

src/authentic2_provisionning_ldap/management/commands/provision.py

@@ -23,7 +23,7 @@ DELETE = 3
 class Command(BaseCommand):
     can_import_django_settings = True
     output_transaction = True
-    requires_model_validation = True
+    requires_system_checks = True
 
     def add_arguments(self, parser):
         parser.add_argument('target_resource', nargs='*')