The tests were referencing an old bootscript - this just bumps the value
to the latest. The list of bootscripts can be found at
http://devhub.scaleway.com/#/bootscripts
bootscripts allow you to start Scaleway servers with a specific kernel version.
The `scaleway_server` has always had a bootscript parameter, and the
`scaleway_bootscript` datasource allows you to lookup bootscripts to be used in
conjunction with the `scaleway_server` resource.