[1.7.x] Added database migration for contrib.redirects.

refs #22170.

Backport of d7576bb27a from master

django/contrib/redirects/migrations/0001_initial.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('sites', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Redirect',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('site', models.ForeignKey(to='sites.Site', to_field='id')),
+                ('old_path', models.CharField(help_text="This should be an absolute path, excluding the domain name. Example: '/events/search/'.", max_length=200, verbose_name='redirect from', db_index=True)),
+                ('new_path', models.CharField(help_text="This can be either an absolute path (as above) or a full URL starting with 'http://'.", max_length=200, verbose_name='redirect to', blank=True)),
+            ],
+            options={
+                'ordering': ('old_path',),
+                'unique_together': set([('site', 'old_path')]),
+                'db_table': 'django_redirect',
+                'verbose_name': 'redirect',
+                'verbose_name_plural': 'redirects',
+            },
+            bases=(models.Model,),
+        ),
+    ]