.Ability to configure the default kernel in `rhel-system-roles` Previously, users could not specify which kernel should be set as the default during system boot. This limitation prevented administrators from easily managing the default kernel selection during automation. With this update, the `rhel-system-roles` package allows configuring the default bootloader kernel using a new `default` option. Users can now designate a single kernel as the default by setting the `default` boolean parameter in kernel settings. The system validates that only one kernel can be marked as default, and applies the selection using `grubby --set-default` as required. This enhancement improves flexibility and simplifies automation when managing kernel versions in RHEL.