🐛 make sure gitlab discovers only unique assets

[imilchev]

It is possible to setup gitlab in such a way that 1 project appears in multiple groups. The gitlab provider discovers assets starting from the root and traversing down finding everything along the way. It is possible that the same thing is found in 2 different places. In the end the provider should return a unique list of assets with no duplicates to make sure everything works as expected

[chris-rock]

Thank you @imilchev

[github-actions]

Test Results

2 804 tests  ±0   2 803 ✅ ±0   54s ⏱️ -7s
  186 suites ±0       1 💤 ±0 
    5 files   ±0       0 ❌ ±0 

Results for commit 986cab8. ± Comparison against base commit 1cab39c.

This pull request removes 3 and adds 3 tests. Note that renamed tests count towards both.

go.mondoo.com/cnquery/v10/llx ‑ TestSuccess/2024-02-21_13:45:24.751704917_+0000_UTC_m=+0.064006569
go.mondoo.com/cnquery/v10/llx ‑ TestTruthy/2024-02-21_13:45:24.751704917_+0000_UTC_m=+0.064006569
go.mondoo.com/cnquery/v10/llx ‑ TestTruthy/2024-02-21_13:45:24.751704917_+0000_UTC_m=+0.064006569#01

go.mondoo.com/cnquery/v10/llx ‑ TestSuccess/2024-02-21_12:27:35.040447084_+0000_UTC_m=+0.007676064
go.mondoo.com/cnquery/v10/llx ‑ TestTruthy/2024-02-21_12:27:35.040447084_+0000_UTC_m=+0.007676064
go.mondoo.com/cnquery/v10/llx ‑ TestTruthy/2024-02-21_12:27:35.040447084_+0000_UTC_m=+0.007676064#01