Update OTel operator variables for one-pipeline 1.5.3

[dineshg13]

What Does This Do

Updates the OpenTelemetry Operator image controls to the CI_OTEL_OPERATOR_* variable names and updates the locked one-pipeline template from 1.5.1 to 1.5.3.

Motivation

DataDog/libdatadog-build#259 prefixed these build-only controls with CI_ so tracer configuration does not interpret them as OpenTelemetry SDK settings. Using one-pipeline 1.5.3 keeps this consumer on the latest published template containing that interface.

Additional Notes

• Verified the one-pipeline 1.5.3 template consumes CI_OTEL_OPERATOR_IMAGES_ENABLED and CI_OTEL_OPERATOR_LANGUAGE.
• Ran ./gradlew spotlessApply successfully.
• git diff --check passes.
• The PR pipeline validates the generated one-pipeline image jobs.
• No runtime tests or release notes are needed because this changes only GitLab CI configuration.

Follow-up to #12255. Equivalent consumer update to DataDog/dd-trace-py#20239.

Contributor Checklist

• Format the title according to the contribution guidelines.
• Assign the required type:, comp:, and AI-generated labels.
• No source files, public documentation, or runtime behavior are changed.

Jira ticket: N/A

[datadog-prod-us1-5]

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 59.09% (-0.00%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 26b544f | Docs | Give us feedback!}

[dd-octo-sts]

🟢 Java Benchmark SLOs — All performance SLOs passed

Suite	Status
Startup	🟢 pass

SLO thresholds are defined here based on automatically generated metrics. A warning is raised when results are within 5% of the threshold.

PR vs. master results

Scenario	Candidate	master	Δ (95% CI of mean)
startup:insecure-bank:iast:Agent	14.01 s	13.92 s	[-0.4%; +1.7%] (no difference)
startup:insecure-bank:tracing:Agent	12.85 s	12.97 s	[-1.7%; -0.2%] (maybe better)
startup:petclinic:appsec:Agent	16.92 s	16.33 s	[-0.7%; +8.0%] (no difference)
startup:petclinic:iast:Agent	16.88 s	16.86 s	[-0.8%; +1.1%] (no difference)
startup:petclinic:profiling:Agent	16.20 s	16.77 s	[-7.6%; +0.8%] (no difference)
startup:petclinic:sca:Agent	16.78 s	16.64 s	[-0.1%; +1.7%] (no difference)
startup:petclinic:tracing:Agent	16.09 s	16.04 s	[-0.7%; +1.3%] (no difference)

Commit: 26b544f8 · CI Pipeline · Benchmarking Platform UI

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Load and DaCapo benchmarks can be triggered manually in the GitLab pipeline. Results will appear in the Benchmarking Platform UI after completion.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-16T17:24:22.419974Z	e67ed89	Draft marked ready
🔒 Security Review	✅ Completed 2026-09-16T17:25:33.121987Z	e67ed89	Draft marked ready

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[datadog-prod-us1-5]

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[dd-octo-sts]

/merge

[gh-worker-devflow-routing-ef8351]

View all feedbacks in Devflow UI.

2026-09-18 14:49:00 UTC ℹ️ Start processing command /merge

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2026-09-18 14:49:06 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in master is approximately 1h (p90).

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2026-09-18 16:02:57 UTC ℹ️ MergeQueue: This merge request was merged