feat: provide otel community demo attribute for service.criticality

[bachgarash]

Changes

This PR includes newly introduced attribute - service.criticality to demo

Implements open-telemetry/semantic-conventions#3088

Merge Requirements

For new features contributions, please make sure you have completed the following
essential items:

• CHANGELOG.md updated to document new feature additions
• Appropriate documentation updates in the docs
• Appropriate Helm chart updates in the helm-charts

Maintainers will not merge until the above have been completed. If you're unsure
which docs need to be changed ping the
@open-telemetry/demo-approvers.

[puckpuck]

We also need to apply similar changes to docker-compose-minimal.yaml

[julianocosta89]

Will this be part of SemConv 1.40.0?

[bachgarash]

Will this be part of SemConv 1.40.0?

Not entirely sure, I hope so

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[horovits]

@julianocosta89 can you advise what it takes to have the new attribute implemented in the demo?

[horovits]

Will this be part of SemConv 1.40.0?

per (https://github.com/open-telemetry/semantic-conventions/releases/tag/v1.40.0) under Enhancements:

service: Add service.criticality attribute to classify services based on operational importance (open-telemetry/semantic-conventions#2986)

[julianocosta89]

Please add an entry on the CHANGELOG

[julianocosta89]

Please let's add this example in the docs: https://opentelemetry.io/docs/demo/

We can create a subfolder under the demo to showcase sample configurations like this one.

[julianocosta89]

Suggested change

	- OTEL_RESOURCE_ATTRIBUTES=${OTEL_RESOURCE_ATTRIBUTES},service.criticality=low
	- OTEL_SERVICE_NAME=llm

LLM intentionally doesn't have instrumentation.

[julianocosta89]

Will this be part of SemConv 1.40.0?

per (https://github.com/open-telemetry/semantic-conventions/releases/tag/v1.40.0) under Enhancements:

service: Add service.criticality attribute to classify services based on operational importance (open-telemetry/semantic-conventions#2986)

hey @horovits thx for pointing out.
I did see that last week, I just didn't have time to go through the PR.

Thx for the patience @bachgarash!
I've left 2 comments, and after them being addressed, we should be good to go!