Add LXD VM GPU passthrough test (New)

[pedro-avalos]

Description

• Add LXD VM physical GPU passthrough test to GPGPU provider
  • This is similar to the existing LXD container test, but it uses a virtual machine instead of a container

Resolved issues

• Resolves CHECKBOX-1719

Documentation

Tests

The test was already present (though misconfigured in the setup steps), so the unit tests are already present in Checkbox.

https://certification.canonical.com/submissions/status/301364

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.01%. Comparing base (9184e03) to head (c5f6285).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1690   +/-   ##
=======================================
  Coverage   49.01%   49.01%           
=======================================
  Files         372      372           
  Lines       40348    40348           
  Branches     6817     6817           
=======================================
  Hits        19777    19777           
  Misses      19849    19849           
  Partials      722      722           

Flag	Coverage Δ
provider-gpgpu	90.86% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[Hook25]

+1, the attached test log doesn't make it 100% clear this did actually pass, but we can do some cleanup afterwards I think. Good job