Archweb now exports Prometheus status via /metrics with request duration
information.

Using a cert named after the primary domain with `_legacy` appended.
However, the cert is only issued for the legacy domains, not the primary
domain.

Deploy for `ipxe.archlinux.org`.

Fixes: archlinux/releng#22

planet.archlinux.org redirects to https://archlinux.org/planet which
then redirects to https://archlinux.org/planet/. Skip one extra
redirect.

These are used to signal the start of the document in a stream of many
documents. As Ansible only supports one YAML document per file this is
unnecessary. About a third of our YAML documents already lacked these.

Django security update

Reverts caching issue

Fix deploying archweb on gemini

We did the revert to help a small business, but they had some time to
fix their setup, so we can revert the revert.

This reverts commit a842fbe7.