Scaleway: Increase disk size for packer

[kinoute]

By default, Scaleway provides only a local disk of 10 Gb which is not enough when we use ax build – we get no space left on device messages after a while which result in a wrong/incomplete snapshot.

[0xtavian]

Thanks for the PR and the reported issue, @kinoute!

I’ll review later tonight. I might want to make this a user option. I’m thinking during ax account-setup, we can prompt the user what size disk to use on the instance. We can save a string containing the size in GB to the axiom.json file and replace the value of size_in_gb dynamically with the users choice.

Will review later tonight! Thanks again