Switch to the voxpupuli/nginx module
We're currently using our own nginx module, we should consider switching to the voxpopuli module, which has far broader community support.
# Steps to deploy
- [x] Add support for Puppet environments via ENC.
- [x] Create an environment containing puppet-tails!113.
- [x] Migrate one by one, in order, using the ENC, checking results and fixing any issues:
- [x] `www.lizard`
- [x] Check `mail.tails.boum.org` ACME well-known configuration
- [x] Check TLS cert configuration
- [x] Check the monthly stats script
- [x] Check gitannex-based mirrors
- [x] Check password for Jenkins web interface
- [x] Check Mirrorbits redirector
- [x] Check `{,{time-based,tagged}.snapshots.}deb.tails.boum.org`
- [x] Check the Redmine archive and redirector
- [x] `iso{tester,builder,worker}N.{lizard,dragon,iguana}`: check tests in Jenkins CI
- [x] Merge puppet-tails!113 and push it to the `production` environment.
- [x] Move all nodes back to the `production` environment.
- [x] Remove the `nginy` module
- [x] Deprecate the `nginy.git` repo
- [x] Delete the `nginy.git` repo in Gitolite3
- [x] Archive the tails/puppet-nginx> project
- [x] Consider making the Jenkins HTTP Basic Auth allow-list dynamic
issue