juju/juju — pull request #1212 by axw (2014-11-24 05:09:36+00:00)
Title: Move charm archive logic to API server

The client no longer determines the charm archive URL
from the current API server address, but instead queries
the API server for a list of URLs to attempt. The uniter
will try each URL until one works.

Fixes https://bugs.launchpad.net/juju-core/+bug/1394976