Machine config hints FileNotFoundError

[Adam Collard]

In `3dbf58081` we added 40-maas-01-machine-config-hints commissioning script as part of work to detect platform leading to optimised kernels.

The script is marked as being run on controllers

        (
            MACHINE_CONFIG_HINTS_NAME,
            {"hook": null_hook, "run_on_controller": True},
        ),

which seems wrong, but assuming it's right the script is not in the right place - systemtests are failing with

[Errno 2] No such file or directory: '/snap/maas/28134/lib/python3.10/site-packages/provisioningserver/refresh/40-maas-01-machine-config-hints'

where the script is available in metadataserver/builtin_scripts/commissioning/