Add command list_tenants (fixes #5044)

refs #5106

entrouvert/djommon/multitenant/management/commands/list_tenants.py

@@ -0,0 +1,14 @@
+from django.core.management.base import BaseCommand
+from entrouvert.djommon.multitenant.middleware import TenantMiddleware
+
+class Command(BaseCommand):
+    requires_model_validation = True
+    can_import_settings = True
+    option_list = BaseCommand.option_list
+
+    def handle(self, **options):
+        all_tenants = TenantMiddleware.get_tenants()
+
+        for tenant in all_tenants:
+            print("{0} {1}".format(tenant.schema_name, tenant.domain_url))
+