kafka: add 2.8 and 4.0 integration tests, increase apiVersion coverage, fix span names

[mmat11]

• Fix kafka span name to follow opentelemetry semantic conventions (https://opentelemetry.io/docs/specs/semconv/messaging/messaging-spans/#span-name)
• Increase apiVersion coverage for fetch and produce requests
• Add some missing attributes for EventTypeKafkaClient
• Add some kafka integration tests: python, java (2.8.0), java (4.0.0)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 54.65%. Comparing base (dd1c8b9) to head (112ea8f).
⚠️ Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
...g/components/ebpf/common/kafka_detect_transform.go	0.00%	6 Missing ⚠️
pkg/app/request/span.go	0.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (dd1c8b9) and HEAD (112ea8f). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (dd1c8b9)	HEAD (112ea8f)
unittests	1	0
oats-test	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #464       +/-   ##
===========================================
- Coverage   66.01%   54.65%   -11.36%     
===========================================
  Files         222      188       -34     
  Lines       23069    20701     -2368     
===========================================
- Hits        15228    11314     -3914     
- Misses       7053     8561     +1508     
- Partials      788      826       +38     

Flag	Coverage Δ
integration-test-arm	34.24% <0.00%> (+0.18%)	⬆️
k8s-integration-test	51.28% <0.00%> (+0.10%)	⬆️
oats-test	?
unittests	?

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[marctc]

* Add some kafka integration tests: python, java (2.8.0), java (4.0.0)

are those convering something OATS tests are not doing? should we consolidate?

[mmat11]

* Add some kafka integration tests: python, java (2.8.0), java (4.0.0)

are those convering something OATS tests are not doing? should we consolidate?

I guess the java tests for version 2.8.0 are overlapping with OATS tests. I had to write them because it's much easier to debug via integration tests than it is via OATS. I can remove those if we don't want overlap