Add keystone v3 support via new domain field on credential

awx/main/migrations/0007_v300_changes.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('main', '0006_v300_changes'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='credential',
+            name='domain',
+            field=models.CharField(default=b'', help_text='The identifier for the domain.', max_length=100, verbose_name='Domain', blank=True),
+        ),
+    ]