markcaudill/haproxy-autoscale — pull request #7 by hinyinlam (2013-07-23 15:04:17+00:00)
Title: Added Auto Scaling Group as a source to list instances. 

This is a use case when user need to put multiple backends behind ELB but security groups is too general to include them all (as other non-backend may also share the same Security Group).