Replaces device_role with role on device model (#13342)

* replaces device_role with role on device model #6391

* fixes lint issue #6391

* revert the database user

* revert test_runner comment

* changes as per review

* Update references to device_role column in UserConfigs

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

netbox/dcim/migrations/0181_rename_device_role_device_role.py

@@ -0,0 +1,35 @@
+from django.db import migrations
+
+
+def update_table_configs(apps, schema_editor):
+    """
+    Replace the `device_role` column in DeviceTable configs with `role`.
+    """
+    UserConfig = apps.get_model('users', 'UserConfig')
+
+    for table in ('DeviceTable', 'DeviceBayTable'):
+        for config in UserConfig.objects.filter(**{f'data__tables__{table}__columns__contains': 'device_role'}):
+            config.data['tables'][table]['columns'] = [
+                'role' if x == 'device_role' else x
+                for x in config.data['tables'][table]['columns']
+            ]
+            config.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dcim', '0180_powerfeed_tenant'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='device',
+            old_name='device_role',
+            new_name='role',
+        ),
+        migrations.RunPython(
+            code=update_table_configs,
+            reverse_code=migrations.RunPython.noop
+        ),
+    ]