Maintenance/lint with recent rules

[zeitounator]

Update role to latest best practices and starndardize code:

• Re-enable ansible-lint as dependency and a linter in molecule
• Remove version constraint on molecule as schema validation is fixed in 4.0.3
• ignore possible venvs for linting
• Fix all errors/warning reported by ansible lint
  • jinja spacing
  • schema in meta/main.yaml
  • tasks/playbooks names related warnings / errors
  • file permissions not set in modules
  • name/when/block key order
  • FQCNs for every module
• Disable molecule dependency manager as we have no deps
• Added pre-commit configuration and configured some plugins. Let them do their job
  • Black now reformats python code
  • new line at end automatically added
  • trailing spaces automatically removed
• Use python f-strings wherever possible