boto/boto — pull request #1665 by arturhoo (2013-08-12 17:51:48+00:00)
Title: Fix VPC Security Group instances fetching

Hi there. I came across this bug recently, when trying to fetch instances from a VPC SG. The `aws-sdk` ruby gem [does it right through filters](https://github.com/aws/aws-sdk-ruby/blob/master/lib/aws/ec2/security_group.rb#L67-L76), so here is the fix for boto.

Fix #1483.