added missing default permission migration

Author: yvess

django/gsmap/migrations/0023_auto_20210930_1336.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.1.12 on 2021-09-30 13:36
+
+from django.db import migrations, models
+import gsmap.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('gsmap', '0022_delete_siteconfiguration'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='snapshot',
+            name='permission',
+            field=models.IntegerField(choices=[(0, 'PUBLIC'), (10, 'NOT_LISTED')], default=gsmap.models.SnapshotPermission['NOT_LISTED']),
+        ),
+    ]