fix(ai_dynamo): accept CloudAI bool True for multi-worker flags

[dshirron3]

Summary

• Fix case-sensitive boolean checks for `multiple-workers-per-node` on prefill and decode workers in `ai_dynamo.sh`.
• CloudAI passes Python `True`/`False` (capitalized) via Slurm CLI args; the script only accepted lowercase `true`, so multi-worker topology was never applied (`gpus-per-worker` stayed at 4, `workers-per-node` stayed at 1).
• Use bash `,,` lowercase expansion for case-insensitive comparison; align `dcgm-exporter-enabled` with the same pattern.

Test Plan

• [V] Deploy ai_dynamo with `multiple-workers-per-node = true` on prefill (disagg tp2 topology).
• [V] Confirm logs show `PREFILL: workers per node: 2` and `Launching 2 prefill worker(s)` per node (not 1).
• [V] Confirm `Initialized: prefill 26/26` (13 nodes × 2 workers) for MLPerf disagg 405B config.

Additional Notes

Observed on GB200 CloudAI runs: CLI had `--prefill-multiple-workers-per-node True` but script logged `workers per node: 1`."

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Enterprise

Run ID: 31174fc9-f135-4315-a1eb-225f75c53323

📥 Commits

Reviewing files that changed from the base of the PR and between 0de6ca8 and c6809cd.

📒 Files selected for processing (1)

• src/cloudai/workloads/ai_dynamo/ai_dynamo.sh

---

📝 Walkthrough

Walkthrough

Changes

Configuration normalization

Layer / File(s)	Summary
Normalize boolean configuration checks src/cloudai/workloads/ai_dynamo/ai_dynamo.sh	vLLM worker allocation and DCGM exporter metric URL checks now compare normalized, case-insensitive boolean configuration values, with safe handling for missing values in worker allocation.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Suggested reviewers: podkidyshev

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: accepting capitalized CloudAI booleans for multi-worker flags.
Description check	✅ Passed	The description matches the code changes and explains the boolean handling fix and test context.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands.}