This box is very sussy and really likes to fill up its zram swap:

  [root@reproducible ~]# zramctl
  NAME       ALGORITHM DISKSIZE  DATA  COMPR TOTAL STREAMS MOUNTPOINT
  /dev/zram0 lzo-rle       1.9G  1.5G 183.4M  196M       1 [SWAP]

  [root@reproducible ~]# free -m
                 total        used        free      shared  buff/cache   available
  Mem:            1928         529          73           5        1325        1236
  Swap:           1927        1543         384

Fixes: 4a5748ea ("Bump zram-fraction to 1.0 for reproducible.archlinux.org")

This box somehow gets a compression ratio of over 12; bump its zram
fraction accordingly, to stop getting alerts about high swap usage.

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.

This is meant as a internal authenticated and encrypted network which we
can use for internal services, we don't want to expose to the internet
or when encryption is desired but not easily implementable.