refactor: handle INJECT_FACTS_AS_VARS=false by using ansible_facts instead

[richm]

Ansible 2.20 has deprecated the use of Ansible facts as variables. For
example, ansible_distribution is now deprecated in favor of
ansible_facts["distribution"]. This is due to making the default
setting INJECT_FACTS_AS_VARS=false. For now, this will create WARNING
messages, but in Ansible 2.24 it will be an error.

See https://docs.ansible.com/projects/ansible/latest/porting_guides/porting_guide_core_2.20.html#inject-facts-as-vars

Signed-off-by: Rich Megginson rmeggins@redhat.com

Summary by Sourcery

Update Ansible fact usage to be compatible with INJECT_FACTS_AS_VARS=false and newer Ansible versions.

Enhancements:

• Replace deprecated ansible_distribution usage in variables with ansible_facts["distribution"] to support newer Ansible versions and avoid upcoming deprecation errors.

Documentation:

• Clarify README-ostree documentation to reference ansible_facts["distribution"] and ansible_facts["distribution_version"] instead of deprecated fact variables.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Refactors Ansible variable usage to comply with Ansible 2.20+ by replacing deprecated fact variables with the supported ansible_facts dict-based access in documentation and conditional variables.

File-Level Changes

Change	Details	Files
Update documentation to reference ansible_facts-based distribution variables instead of deprecated direct fact variables.	Change DISTRO-VERSION description to refer to ansible_facts["distribution"] and ansible_facts["distribution_version"] format Ensure examples remain valid for common distributions like Fedora, CentOS, and Red Hat	README-ostree.md
Switch distro-detection conditionals in vars files from deprecated ansible_distribution fact to ansible_facts['distribution'].	Update __tlog_is_rh_distro to use ansible_facts['distribution'] when checking membership in __tlog_rh_distros Update __tlog_is_rh_distro_fedora to use ansible_facts['distribution'] when checking membership in __tlog_rh_distros_fedora Keep the overall structure and semantics of the distro lists unchanged	tests/vars/rh_distros_vars.yml vars/main.yml

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[richm]

[citest]

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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