Merge branch 'drop-old-distros' into 'master'

roles/float-base-docker/tasks/podman_debian.yml

roles/float-base-docker/templates/run.sh.j2

roles/float-base-docker/templates/systemd.j2

roles/float-base/files/mtail.service

roles/float-base/files/mtail.service.buster

roles/float-base/files/mtail.service.stretch

roles/float-base/files/node-exporter.default

roles/float-base/files/node-exporter.default.buster

roles/float-base/files/node-exporter.default.stretch

roles/float-base/tasks/apt.yml

roles/float-base/tasks/harden.yml

roles/float-base/tasks/prometheus.yml

roles/float-base/tasks/syslog.yml

roles/float-base/templates/sources.list.j2

roles/float-infra-dns/templates/bind/named.conf.local

roles/float-infra-dns/templates/bind/named.conf.options

roles/float-infra-haproxy/templates/haproxy.cfg.j2

roles/float-infra-nginx/templates/nginx-upstream.j2