unify span links

[cbeauchesne]

Motivation

Changes

Workflow

1. ⚠️ Create your PR as draft ⚠️
2. Work on you PR until the CI passes
3. Mark it as ready for review
   • Test logic is modified? -> Get a review from RFC owner.
   • Framework is modified, or non obvious usage of it -> get a review from R&P team

🚀 Once your PR is reviewed and the CI green, you can merge it!

🛟 #apm-shared-testing 🛟

Reviewer checklist

• Anything but tests/ or manifests/ is modified ? I have the approval from R&P team
• A docker base image is modified?
  • the relevant build-XXX-image label is present
• A scenario is added, removed or renamed?
  • Get a review from R&P team

[github-actions]

CODEOWNERS have been resolved as:

utils/dd_types/_datadog_span_link.py                                    @DataDog/system-tests-core
tests/test_distributed.py                                               @DataDog/system-tests-core
tests/test_library_conf.py                                              @DataDog/system-tests-core
tests/test_v1_payloads.py                                               @DataDog/system-tests-core
utils/dd_types/__init__.py                                              @DataDog/system-tests-core
utils/dd_types/_datadog_agent_trace.py                                  @DataDog/system-tests-core
utils/dd_types/_datadog_library_trace.py                                @DataDog/system-tests-core

[datadog-datadog-prod-us1-2]

🎉 All green!

🧪 All tests passed
❄️ No new flaky tests detected

🔄 Datadog auto-retried 2 jobs - 0 passed on retry

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 0080a21 | Docs | Datadog PR Page | Give us feedback!}

[cbeauchesne]

@codex review