Introduce the 'aap_rules_validation' role

[w4hf]

What does this PR do?

Introduce a new role : aap_rules_validation
An ansible role which audit the declared AAP configuration and validate it against a set of user-defined rules.

How should this be tested?

Two test playbooks are delivered with the role under the folder tests/playbooks :

• aap_rules_validation_filetree_read.yml
• aap_rules_validation_include.yml
  A set of example rules to test against are available under tests/configs/controller_rules.yml

Is there a relevant Issue open for this?

n/a

Other Relevant info, PRs, etc

I demoed this role during the community of practice meeting under the controller_policy name which was rectified to adapt to the AAP strategy.

[djdanielsson]

I wonder if the name shouldn't have controller in the name if the plan is in the future to support all the components

[ivarmu]

Amazing work with this! This will be very useful for many people for sure!

I only have to ask for two amends and the addition of a changelog fragment.

[ivarmu]

LGTM

[djdanielsson]

I can merge once you fix the linting/pre-commit errors (the current ansible ones are expected so you can ignore those)

[djdanielsson]

LGTM