[tammy-baylis-swi]

Update imports of OTel span/resource attributes. Some are still for old, deprecated attributes such as http.method that APM uses as fallbacks. We can remove those in another PR.

[Copilot]

🟢 Approval recommended

There are no active review issues for the OpenTelemetry attribute-import update.

No open issues 🎉

What changed in this PR

Modernizes OpenTelemetry span and resource attribute imports in the SolarWinds APM distribution while preserving existing attribute keys and deprecated HTTP fallbacks.

Changes:

• Replaces SpanAttributes and ResourceAttributes references with constants from stable and incubating attribute modules.
• Updates resource-detector tests to use the same constants.
• Simplifies HTTP-span detection tests by using real attribute constants and SpanKind values instead of mocking them.

File	Description
tests/​unit/​test_uams.py	Uses HOST_ID in resource assertions.
tests/​unit/​test_processors/​test_response_time_processor.py	Uses real HTTP constants and span kinds in detection tests.
tests/​unit/​test_k8s.py	Uses individual Kubernetes constants in assertions.
solarwinds_apm/​uams.py	Imports HOST_ID from the incubating host module.
solarwinds_apm/​trace/​serviceentry_processor.py	Updates function-name, HTTP-route, and URL-path attribute imports.
solarwinds_apm/​trace/​response_time_processor.py	Updates HTTP attribute imports while retaining deprecated fallbacks.
solarwinds_apm/​k8s.py	Imports resource keys from the stable Kubernetes attribute module.

_{Review effort: Balanced}

[jerrytfleung]

LGTM