Generate diff for all modules

[jooola]

SUMMARY

Ansible is capable of printing diffs for before and after a module has run.

https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_checkmode.html#using-diff-mode

None of our modules implement this feature, which can be handy.

ISSUE TYPE

• Feature Idea

ADDITIONAL INFORMATION

Most of the following steps are already implemented for the logic of our modules, only a few are missing to implement the diff:

• Fetch the current state of the resource
• TODO: Generate the result of the previous state and save it
• Apply the requested changes if any, or create the resource if non-existent
• TODO: Generate the result of the after state and save it
• Generate the result of the state and return to the user

To simplify the implementation, a refactor might be needed to use the same structure on all our modules.

[github-actions]

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