Currently, for AWS instances in `is_supported_instance_class()` other than i3* and *gd (for example: m5d), scylla_io_setup neither provides preconfigured values for io_properties.yaml nor runs iotune nor fails. This silently results in a broken io_properties.yaml, like so: disks: - mountpoint: /var/lib/scylla Fix that. Closes #9660