[parametric] add remote config tests with empty DD_SERVICE or DD_ENV

[lucaspimentel]

Motivation

Some tracing libraries added checks for matching service and env in remote config payloads. For example, DataDog/dd-trace-java#6636. This causes issues in scenarios like SSI where the env (aka DD_ENV) is configured in the agent, but not on the tracer. The Java tracer is rejecting remote sampling rules in SSI, which prevents Adaptive Sampling from working correctly.

See also APM_TRACING matching & SSI 🔒

Changes

Add a new test that asserts that the tracing library accepts a remote config payload without checking for matching service or env, since that is already handled by the agent.

Workflow

1. ⚠️ Create your PR as draft ⚠️
2. Work on you PR until the CI passes (if something not related to your task is failing, you can ignore it)
3. Mark it as ready for review
   • Test logic is modified? -> Get a review from RFC owner. We're working on refining the codeowners file quickly.
   • Framework is modified, or non obvious usage of it -> get a review from R&P team

🚀 Once your PR is reviewed, 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
• CI is green, or failing jobs are not related to this change (and you are 100% sure about this statement)
• 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