mitchellh/packer — pull request #637 by johnbellone (2013-11-19 22:16:44+00:00)
Title: Add ProxyUrl parameter for OpenStack builder.

In my particular case I need to use a separate HTTP proxy to access my
OpenStack API than what is set in the environment. This commit adds an
optional parameter to the builder configuration and overrides the
net/http client that is used by the gophercloud library.