Raise ansible-core support to 2.21 for maintained upstream support through November 2027. This requires Python 3.12-3.14 on control nodes and 3.9-3.14 on targets.
Signed-off-by: bo.jiang <bo.jiang@daocloud.io>
- Use proper syntax highlighting for config.rb examples
- Consistent shell style ($ as prompt)
- Use only one way to do things
- Remove OS specific details
* Simplify docker systemd unit
systemd handles missing unit by ignoring the dependency so we don't need
to template them.
* Remove RHEL 7/CentOS 7 support
- remove ref in kubespray roles
- move CI from centos 7 to 8
- remove docs related to centos7
* Remove container-storage-setup
Only used for RHEL 7 and CentOS 7