[NO-TICKET] Add Rack integration tests with deny/pass list

[Strech]

What does this PR do?

Adds fast running integration tests for Rack with deny/pass list and blocking

Motivation:

We have more intensive tests, but they are very slow and not well maintained and hopefully we could deprecate some of them soon

Change log entry

No.

Additional Notes:

No.

How to test the change?

CI.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.75%. Comparing base (39172da) to head (7dc9766).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4536      +/-   ##
==========================================
- Coverage   97.76%   97.75%   -0.01%     
==========================================
  Files        1390     1391       +1     
  Lines       84760    84821      +61     
  Branches     4281     4281              
==========================================
+ Hits        82862    82917      +55     
- Misses       1898     1904       +6     

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[datadog-datadog-prod-us1]

Datadog Report

Branch report: add-passlist-and-denylist-integration-rack-tests
Commit report: 7dc9766
Test service: dd-trace-rb

✅ 0 Failed, 20845 Passed, 1370 Skipped, 3m 26.92s Total Time

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-03-25 15:23:12

Comparing candidate commit 7dc9766 in PR branch add-passlist-and-denylist-integration-rack-tests with baseline commit 39172da in branch master.

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