opscode/knife-ec2 — pull request #190 by chuckg (2014-01-22 23:18:46+00:00)
Title: Add support for STS session token

Adds support for providing an STS session token to the knife-ec2 commandline (or knife.rb configuration). The same mechanism is currently supported by `awscli`, `boto`, and others via the AWS_SECURITY_TOKEN environment variable.