Handle v1 payload output from trace-agent

[ajgajg1134]

Motivation

Currently working on a converting version of the agent that will always output the new v1 format. This change updates any tests that examine the trace-agent output to work with the new v1 support.

Also in testing this I discovered the otel integrations scenario doesn't work in --replay mode, I tried to fix this (with cursor) which mostly worked? But there still seems to be some issue related to how the scenario tracks requests made. Instead of digging deeper I kept the improvement (which mostly works and was useful for speeding up my testing) but added a log warning about this.

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

• If PR title starts with [<language>], double-check that only <language> is impacted by the change
• No system-tests internal is modified. Otherwise, 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 (or removed)?
  • Get a review from R&P team

[github-actions]

CODEOWNERS have been resolved as:

tests/apm_tracing_e2e/test_process_tags.py                              @DataDog/system-tests-core
tests/integrations/test_open_telemetry.py                               @DataDog/system-tests-core
tests/integrations/utils.py                                             @DataDog/system-tests-core
tests/test_config_consistency.py                                        @DataDog/system-tests-core
tests/test_data_integrity.py                                            @DataDog/system-tests-core
tests/test_telemetry.py                                                 @DataDog/libdatadog-telemetry @DataDog/apm-sdk-capabilities @DataDog/system-tests-core
utils/_context/_scenarios/open_telemetry.py                             @DataDog/system-tests-core
utils/interfaces/_agent.py                                              @DataDog/system-tests-core
utils/interfaces/_core.py                                               @DataDog/system-tests-core
utils/proxy/traces/trace_v1.py                                          @DataDog/system-tests-core