Feature/capri vps

Write a playbook which ensures that /etc/opt/slapos/slapos.cfg:

• has proper manager_list defined:

[slapos]
manager_list = devperm,prerm

• has correct disk given to the VMs (Note: requires new lines due to splitlines usage) :

[manager:devperm]
allowed-disk-for-vm =
  /dev/nvme0n1
  /dev/nvme1n1
  /dev/nvme2n1
  /dev/nvme3n1

• has forced binary cache (Note: requires new lines due to splitting on newslines):

[networkcache]
download-from-binary-cache-force-url-list =
  https://lab.nexedi.com/nexedi/slapos/raw/1.0.
  https://lab.node.vifib.com/nexedi/slapos/raw/1.0.

• Make tasks shareable, so that other styles of machines can be added easily

The https://handbook.rapid.space/provider/rapidspace-HowTo.Check.Datacenter section Make sure slapos is correctly configured is covered for VPS brute.

Notes:

• ini_file module can't be used everywhere due to missing multiline support