aws/aws-cli — pull request #414 by jamesls (2013-10-16 22:42:51+00:00)
Title: Correct output for authorize-security-group-ingress

Verified that we just a return value of `{"return": "true"}`.
This also syncs up with the API docs:
http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-AuthorizeSecurityGroupIngress.html#ApiReference-query-AuthorizeSecurityGroupIngress-Response