PORT NUMBERS USED OR RESERVED FOR USE ON DEUXFLEURS CLUSTERS

Since we don't use Nomad's automatic port assignation (all ports are static
and most jobs use network_mode = "host"), here is a list of used/reserved
ports so that we can avoid conflicts when adding services.

22      sshd
24      dovecot lmtp
25      postfix smtp
53      unbound
80      tricot
143     dovecot imap
389     bottin
443     tricot
465     postfix smtps
587     postfix submission
993     dovecot imaps
1337    dovecot zauthoentication
1666    wgautomesh
1728    nix-serve
3719    grafana
3900    garage S3 (prod)
3901    garage RPC (prod)
3902    garage web (prod)
3903    garage admin (prod)
3904    garage k2v (prod)
3909    garage admin (staging)
3990    garage S3 (staging)
3991    garage rpc (staging)
3992    garage web (staging)
3993    garage k2v (staging)
4317    jaeger
4318    jaeger
4646    nomad
4647    nomad
4648    nomad
5432    psql_proxy
5433    postgresql
8008    synapse
8080    jitsi video bridge (prod) / reserved (staging)
8300    consul
8301    consul
8302    consul
8501    consul
8503    consul
8600    consul
8999    opendkim
9090    prometheus
9100    node_exporter
9334    tricot metrics
9991    guichet