Curl scripts to make Vagrantfile self-contained

[nikimanoledaki]

What this PR does / why we need it:

Previously, using the Vagrantfile required cloning the Flintlock repo because it was reading scripts/devpool.sh and scripts/example-config.toml from a local path. Now, it curls these scripts so that the Vagrantfile can be used independently from the repo. :)

Special notes for your reviewer:

Checklist:

• squashed commits into logical changes
• includes documentation
• adds unit tests
• adds or updates e2e tests

[Callisto13]

Do people use Vagrantfiles without cloning the repo? (Asking because I for real did not know that was a thing and assumed ppl always clone like I do 😆 )

[codecov-commenter]

Codecov Report

Base: 56.57% // Head: 56.57% // No change to project coverage 👍

Coverage data is based on head (ab22ff8) compared to base (70e020d).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #535   +/-   ##
=======================================
  Coverage   56.57%   56.57%           
=======================================
  Files          57       57           
  Lines        2768     2768           
=======================================
  Hits         1566     1566           
  Misses       1061     1061           
  Partials      141      141           

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[nikimanoledaki]

I do! 😄 I copied it here and made some changes (needed Ubuntu 2204, more CPU/RAM, and a bunch of deps).

Increases project coverage by +0.03%

You are most welcome!

[Callisto13]

Increases project coverage by +0.03%

You are most welcome!

lol codecov what are you even for smh

[Callisto13]

Ideally the vagrantfile (and everyone else) should be using https://github.com/weaveworks-liquidmetal/flintlock/blob/main/hack/scripts/provision.sh instead... I will make a note of that to do later.

[Callisto13]

gah can you sign your commit? assuming this is Niki and not some imposter... 🧐

[nikimanoledaki]

Done! :))