This will let us do normal puppet applies on our postgres hosts again.
Crudini is already installed and /etc/zulip/zulip.conf has already been edited
on the relevant hosts.
(imported from commit 8e2b88d2fe2f7b2367ecb73a50a299200fe381a0)
We didn't remove python-argparse from the requirements when that was
removed, and we also still need python-pip to install wal-e :(.
(imported from commit b82d3b429cffe0a3993819358511e11268ee2fef)
Zev Benjamin
Tim Abbott