Fixed #15548 -- Added an ordering clause to prevent test failures under Postgres. Thanks to bberes for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15743 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/modeladmin/models.py

@@ -9,6 +9,9 @@ class Band(models.Model):
     bio = models.TextField()
     sign_date = models.DateField()
 
+    class Meta:
+        ordering = ('name',)
+
     def __unicode__(self):
         return self.name