feat(trait): Move addon Telemetry to traits

[gansheer]

Ref #5787

• Transform Telemetry addon to trait
• Ensure kamel CLI creates new integrations with telemetry as trait
• keep retrocompatibility with addon spec:

  traits:
    addons:
      telemetry:
        enabled: true
        endpoint: http://opentelemetrycollector.otlp:4317

Release Note

feat(trait): Move addon Telemetry to traits

[squakez]

LGTM. I think you need to check how the kamel run would convert to an addons spec or to an trait spec.

[gansheer]

@squakez That was the point of this change to test is the run command really creates a trait and not an addon.

[squakez]

What I miss is some deprecation notice in the Integration which is using the addons. Ideally, when executing the trait logic, it should be reported as an Integration condition as it happens for instance here:

camel-k/pkg/trait/builder.go

Line 98 in a664283

condition = newOrAppend(condition, "Spectrum publishing strategy is deprecated and may be removed in future releases. Make sure to use any supported publishing strategy instead.")

[squakez]

Ah, we also need to add a // Deprecated comment as it's the way I usually scan code for deprecations to be eventually removed.