1.Reserve an efi system
2. tmt run -l reboot (--hard)
3. failed to boot into the system anymore

We need use rhts-reboot instead of reboot for the soft-reboot:
https://beaker-project.org/docs/architecture-guide/provisioning-process.html#boot-order
In hard reboot scenario, bkr system-power --action reboot will be called, and it will make the efi system
boot from network instead of the anaconda created entry,just as in soft-reboot scenario mentioned above