boto/boto — pull request #1276 by dkavanagh (2013-01-28 21:24:18+00:00)
Title: SetDesiredCapacity

This is a documented API method.
http://docs.aws.amazon.com/AutoScaling/latest/APIReference/API_SetDesiredCapacity.html

Boto wasn't implementing it. Eucalyptus plans to implement and support in the user console, so we'd like this put into boto as well, please.