fix(self-managed): bump llm stacks, nvcf-api and cassandra chart

[along-2017]

TL;DR

Bump the self-managed stack chart pins for the LLM addon and Cassandra: llm-request-router 1.6.6 -> 1.7.2, llm-api-gateway 1.0.1 -> 1.4.1, cassandra 0.17.0 -> 0.19.1. This makes the LLM request-priority feature deployable on a stack install and picks up the recent fixes and changes in the LLM components.

Additional Details

• llm-request-router 1.6.6 -> 1.7.2 moves the stargate image 0.3.2 -> 0.9.0.
• llm-api-gateway 1.0.1 -> 1.4.1 moves the gateway image 1.0.1 -> 0.13.0: The image tag drops numerically because images now publish from the monorepo release line.
• cassandra 0.17.0 -> 0.19.1 moves the base image off Bitnami to official Apache Cassandra (5.0.6-nv-1 -> 5.0.8-nv-0, feat(cassandra): move the Cassandra stack off Bitnami to official Apache Cassandra #328), makes PodDisruptionBudget configurable via values (feat(helm): expose PodDisruptionBudget via values across all charts #808), and moves the migrations job image 0.11.0 -> 0.15.0 (fix(charts): consume latest llm-api-gateway and llm-request-router … #851).
• The migrations image 0.11.0 -> 0.15.0 contains: the llm_config column on nvcf_api.functions_v3 (feat(cassandra): add llm_config column to nvcf_api schema #643), first-time publication of the event_ledger, nvcf_autoscaler, and nvct_api keyspace schemas (feat(migrations): add event_ledger keyspace Cassandra migration #207, fix(cassandra): publish required service schemas #439), a fix for the rendered migration replica count (fix(cassandra): render migration replica count #414), and skipping non-directory entries under keyspaces/ (fix(migrations): skip non-directory entries under keyspaces/ #192). All DDL is additive with IF NOT EXISTS.
• The nvcf-api chart needs no bump here: it was already moved to 1.24.1 in fix(self-managed): bump nvcf-api and grpc-proxy chart pins #929.

For QA

• Local sanity test: installed the stack with these pins on a local cluster; the deployment came up end to end, including the Cassandra migrations job and the LLM addon.
• Each pin verified against its release tag and traced to the image it carries.

Issues

Relates to #852

Checklist

• I am familiar with the Contributing Guidelines.
• I have signed off my commits for Developer Certificate of Origin (DCO) compliance.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

Summary by CodeRabbit

• Updates
  • Updated the self-managed deployment stack’s core platform components to newer versions.
  • Updated the Cassandra-backed data service and request-routing components for improved compatibility and access to the latest fixes and enhancements.
  • Updated the API gateway component to its latest supported release.

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📥 Commits

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📒 Files selected for processing (2)

• deploy/stacks/self-managed/helmfile.d/01-dependencies.yaml.gotmpl
• deploy/stacks/self-managed/helmfile.d/02-core.yaml.gotmpl

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📝 Walkthrough

Walkthrough

The self-managed Helmfile definitions update chart versions for Cassandra, llm-request-router, and llm-api-gateway.

Changes

Self-managed chart updates

Layer / File(s)	Summary
Chart version updates deploy/stacks/self-managed/helmfile.d/01-dependencies.yaml.gotmpl, deploy/stacks/self-managed/helmfile.d/02-core.yaml.gotmpl	Cassandra updates to 0.19.1, llm-request-router updates to 1.7.2, and llm-api-gateway updates to 1.4.1.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: 🔵 Low · up to 97cf1

This change upgrades the self-managed LLM and Cassandra charts, including runtime images and database migrations. It is mergeable with owner awareness, but the published chart contracts and additive schema changes should be validated to avoid startup or migration failures.

Suggested labels: released

Suggested reviewers: bright-poku

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title follows Conventional Commits syntax, but fix does not match the primary nature of these chart and dependency version updates.	Use a maintenance-oriented type such as chore(self-managed): bump LLM stack and Cassandra charts.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/self-managed/bump-llm-and-cassandra-chart-pins

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