Update attributes semantic conventions OTEL v1.30.0

[mariomac]

The OTEL attribute db.system has been renamed to db.system.name.

If you are using Prometheus exporter, db_system has been also renamed to db_system_name.

[codecov]

Codecov Report

Attention: Patch coverage is 89.47368% with 2 lines in your changes missing coverage. Please review.

Project coverage is 71.24%. Comparing base (074e718) to head (4772c4c).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/internal/request/span_getters.go	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1578      +/-   ##
==========================================
+ Coverage   71.20%   71.24%   +0.03%     
==========================================
  Files         197      197              
  Lines       19754    19755       +1     
==========================================
+ Hits        14066    14074       +8     
+ Misses       5006     5001       -5     
+ Partials      682      680       -2     

Flag	Coverage Δ
integration-test	52.92% <68.42%> (+0.07%)	⬆️
k8s-integration-test	53.57% <26.31%> (+0.05%)	⬆️
oats-test	34.63% <78.94%> (-0.02%)	⬇️
unittests	47.30% <78.94%> (-0.01%)	⬇️

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[cyrille-leclerc]

Do we have a config flag similar to otel.semconv-stability.opt-in=http,database? it also supports duplication with values like http/dup.
@zeitlinger, @matt-hensley, and @maryliag are super familiar with this.

[mariomac]

@cyrille-leclerc no, we don't have it, that's why I preferred to ship this breaking change with a new major version number. But I guess that at some point we'll need to implement this flag.

[grcevski]

LGTM!