Migrate Gentoo importer to advisory V2

[ziadhany]

Issue:

• VCIO-API-V2: Migrate Gentoo importer to advisory V2 #2040

[ziadhany]

gentoo importer logs:

Importing data using gentoo_importer_v2
INFO 2026-01-01 13:56:44.096374 UTC Pipeline [GentooImporterPipeline] starting
INFO 2026-01-01 13:56:44.096532 UTC Step [clone] starting
INFO 2026-01-01 13:56:44.096601 UTC Cloning `git+https://anongit.gentoo.org/git/data/glsa.git`
INFO 2026-01-01 13:57:10.664048 UTC Step [clone] completed in 27 seconds
INFO 2026-01-01 13:57:10.664196 UTC Step [collect_and_store_advisories] starting
INFO 2026-01-01 13:57:10.692323 UTC Collecting 3,809 advisories
INFO 2026-01-01 13:57:15.280573 UTC Progress: 10% (381/3809) ETA: 41 seconds
INFO 2026-01-01 13:57:21.279172 UTC Progress: 20% (762/3809) ETA: 42 seconds
INFO 2026-01-01 13:57:27.515311 UTC Progress: 30% (1143/3809) ETA: 39 seconds
InvalidVersion - version: 3.24.48:3 - error:'3.24.48:3' is not a valid <class 'univers.versions.GentooVersion'>
INFO 2026-01-01 13:57:34.218837 UTC Progress: 40% (1524/3809) ETA: 35 seconds
INFO 2026-01-01 13:57:41.346657 UTC Progress: 50% (1905/3809) ETA: 31 seconds
INFO 2026-01-01 13:57:46.184409 UTC Progress: 60% (2286/3809) ETA: 24 seconds
InvalidVersion - version: 6.9.3:6 - error:'6.9.3:6' is not a valid <class 'univers.versions.GentooVersion'>
INFO 2026-01-01 13:57:50.800820 UTC Progress: 70% (2667/3809) ETA: 17 seconds
INFO 2026-01-01 13:57:58.011454 UTC Progress: 80% (3048/3809) ETA: 12 seconds
INFO 2026-01-01 13:58:03.875429 UTC Progress: 90% (3429/3809) ETA: 6 seconds
INFO 2026-01-01 13:58:09.804842 UTC Progress: 100% (3809/3809)
INFO 2026-01-01 13:58:09.823755 UTC Successfully collected 3,809 advisories
INFO 2026-01-01 13:58:09.823893 UTC Step [collect_and_store_advisories] completed in 59 seconds
INFO 2026-01-01 13:58:09.823966 UTC Step [clean_downloads] starting
INFO 2026-01-01 13:58:09.824028 UTC Removing cloned repository
INFO 2026-01-01 13:58:09.890193 UTC Step [clean_downloads] completed in 0 seconds
INFO 2026-01-01 13:58:09.890356 UTC Pipeline completed in 86 seconds (1.4 minutes)

from vulnerabilities.models import AdvisoryV2
from django.db.models import Count
duplicates = (
    AdvisoryV2.objects
    .values('avid')
    .annotate(count=Count('id'))
    .filter(count__gt=1)
)
len(duplicates)
Out[2]: 0
AdvisoryV2.objects.count()
Out[3]: 3809

[ziadhany]

I need to fix this to ensure affected_packages is accurate.

[ziadhany]

Related issue:

• Revisit why we are skipping some versions in gentoo importer  #1074