Use official parametric scenario parameters

[cbeauchesne]

What does this PR do?
Use official parametric scenario parameters

Motivation:
previously known as experimental, those parameters are now officials, and old ones are removed

Change log entry

Additional Notes:

How to test the change?

[github-actions]

👋 Hey @DataDog/ruby-guild, please fill "Change log entry" section in the pull request description.

If changes need to be present in CHANGELOG.md you can state it this way

**Change log entry**

Yes. A brief summary to be placed into the CHANGELOG.md

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Or you can opt out like that

**Change log entry**

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^{Visited at: 2025-01-31 08:35:05 UTC}

[datadog-datadog-prod-us1]

Datadog Report

Branch report: cbeauchesne/system-tests-parameter
Commit report: 50119f9
Test service: dd-trace-rb

✅ 0 Failed, 22119 Passed, 1476 Skipped, 5m 24.56s Total Time

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.72%. Comparing base (5cb85a0) to head (50119f9).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4332   +/-   ##
=======================================
  Coverage   97.72%   97.72%           
=======================================
  Files        1368     1368           
  Lines       82998    82998           
  Branches     4220     4220           
=======================================
+ Hits        81110    81111    +1     
+ Misses       1888     1887    -1     

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[pr-commenter]

Benchmarks

Benchmark execution time: 2025-01-31 08:58:00

Comparing candidate commit 50119f9 in PR branch cbeauchesne/system-tests-parameter with baseline commit 5cb85a0 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 31 metrics, 2 unstable metrics.