fog/fog — pull request #1874 by mikehale (2013-06-10 15:51:56+00:00)
Title: [AWS | AutoScaling] Do not send Instances for update_auto_scaling_group

(Avoids 413 Request Entity Too Large for ASGs with lots of instances)

AWS does not require or expect Instances to be sent when updating the group: http://docs.aws.amazon.com/AutoScaling/latest/APIReference/API_UpdateAutoScalingGroup.html