models: Add missing migrations from invite_as change.

I neglected to `git add` after doing `renumber-migrations` for
1f8f227444.

zerver/migrations/0292_update_default_value_of_invited_as.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.2.13 on 2020-06-21 21:09
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('zerver', '0291_realm_retention_days_not_null'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='multiuseinvite',
+            name='invited_as',
+            field=models.PositiveSmallIntegerField(default=400),
+        ),
+        migrations.AlterField(
+            model_name='preregistrationuser',
+            name='invited_as',
+            field=models.PositiveSmallIntegerField(default=400),
+        ),
+    ]

zerver/migrations/0293_update_invite_as_dict_values.py

@@ -0,0 +1,53 @@
+# Generated by Django 2.2.13 on 2020-06-21 21:13
+
+from django.db import migrations
+from django.db.backends.postgresql.schema import DatabaseSchemaEditor
+from django.db.migrations.state import StateApps
+
+
+def update_invite_as_dict_values(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
+    PreregistrationUser = apps.get_model('zerver', 'PreregistrationUser')
+    MultiuseInvite = apps.get_model('zerver', 'MultiuseInvite')
+
+    OLD_INVITE_AS_DICT = dict(
+        MEMBER = 1,
+        REALM_ADMIN = 2,
+        GUEST_USER = 3,
+        REALM_OWNER = 4,
+    )
+    NEW_INVITE_AS_DICT = dict(
+        REALM_OWNER = 100,
+        REALM_ADMIN = 200,
+        MEMBER = 400,
+        GUEST_USER = 600,
+    )
+
+    PreregistrationUser.objects.filter(invited_as=OLD_INVITE_AS_DICT['REALM_OWNER']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['REALM_OWNER'])
+    PreregistrationUser.objects.filter(invited_as=OLD_INVITE_AS_DICT['REALM_ADMIN']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['REALM_ADMIN'])
+    PreregistrationUser.objects.filter(invited_as=OLD_INVITE_AS_DICT['MEMBER']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['MEMBER'])
+    PreregistrationUser.objects.filter(invited_as=OLD_INVITE_AS_DICT['GUEST_USER']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['GUEST_USER'])
+
+    MultiuseInvite.objects.filter(invited_as=OLD_INVITE_AS_DICT['REALM_OWNER']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['REALM_OWNER'])
+    MultiuseInvite.objects.filter(invited_as=OLD_INVITE_AS_DICT['REALM_ADMIN']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['REALM_ADMIN'])
+    MultiuseInvite.objects.filter(invited_as=OLD_INVITE_AS_DICT['MEMBER']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['MEMBER'])
+    MultiuseInvite.objects.filter(invited_as=OLD_INVITE_AS_DICT['GUEST_USER']) \
+        .update(invited_as=NEW_INVITE_AS_DICT['GUEST_USER'])
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('zerver', '0292_update_default_value_of_invited_as'),
+    ]
+
+    operations = [
+        migrations.RunPython(update_invite_as_dict_values,
+                             reverse_code=migrations.RunPython.noop,
+                             elidable=True),
+    ]