AppScale/appscale-tools — pull request #146 by shatterednirvana (2013-02-11 19:12:34+00:00)
Title: Altered how we see if images exist in Eucalyptus

This is due to a euca bug (https://eucalyptus.atlassian.net/browse/EUCA-4963), where it returns `None` if we try a `get_image` on non-existent image (instead of raising an `EC2ResponseError`).