[Java] Tracer flare debug logs tests

[cecile75]

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Motivation

APMAPI-27 - [Java] Tracer flare debug logs

Changes

• add check of the content of the java tracer flare

• add check of the content of the tracer.log file inside the java tracer flare

• For these tests, I've added the function add_remote_config(self, path, payload) that uses the endpoint POST "/test/session/responses/config" in order to add the AGENT_TASK to the already existing Remote Configuration (AGENT_CONFIG).

Notes:

• I've tested it locally on my laptop with a snapshot of the java tracer (dd-java-agent-1.38.0-SNAPSHOT)

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

:rocket: Once your PR is reviewed, you can merge it!

🛟 #apm-shared-testing 🛟

Reviewer checklist

• [ ] Relevant label (run-parametric-scenario, run-profiling-scenario...) are presents
• [ ] 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