Comment 0 for bug 1308557

When using openstack charms that require a PPA to be added, if we need to use apt-key to add a gpg key it may use port 11371 which could be blocked in firewalled environments.

In charm-helpers this was updated with:
http://bazaar.launchpad.net/~charm-helpers/charm-helpers/devel/revision/106

I'd like to see other affected openstack charms also use this convention to reduce the numbers of ports that need to be opened to deploy openstack.