Add debugger system tests for rate limiting and probes on the same location

[cimi]

Motivation

In this PR we add two new tests to the DEBUGGER_METHOD_PROBES_SNAPSHOT scenario:

• one test for rate limiting that calls the same endpoint 10 times in a row and asserts that we only capture one snapshot (the rate limiting for snapshot capture should be 1/s).
• one test for multiple probes on the same location, where we assert that both probes generate a snapshot.

Disclaimer: these are the first system tests I've written, they were made during a system tests workshop with my team in NYC.

Changes

Add two new tests.

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

• N/A 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)
• N/A A docker base image is modified?
• N/A A scenario is added (or removed)?