Feature: Support adding own ansible playbooks

[torsina]

Motivation

Adding features clusterwise while not having to do a second step requiring setting up the playbook to work on every node at once. My usecase would be to add LUKS to every node for the portion of their storage used for volumes.

Description

Either in the InputManifest for the cluster or somewhere else, add a ansible-playbook attribute that's a path to a folder containing ansible playbook for whatever the user want

Right now the only way I can think of is to fork Claudie and add my own playbook alongside the wg playbook, which is an extremely ugly workaround and non-scalable

Exit criteria

I don't know the tasks that would be needed to achieve this, but I believe this would give enormous flexibility to Claudie on top of what it already has