- Use ansible_facts[] instead of ansible_ prefix
- Update os_family, distribution, default_ipv4, date_time, hostname, port
- Also fixes YAML colons in msg strings
BREAKING CHANGE: Removed RedHat/CentOS/Rocky Linux support to improve stability
- Remove all RedHat/CentOS-specific code and variables
- Consolidate Ubuntu/Debian variables into single debian-family.yml
- Simplify CI/CD pipeline (remove CentOS tests)
- Remove unstable multi-OS complexity
- Update documentation to reflect Ubuntu/Debian focus
- Streamline playbooks for better maintainability
This change makes the project more stable and maintainable by focusing
on the most common server distributions (Ubuntu/Debian) instead of
trying to support multiple OS families with different package managers
and configurations.