fix: add namespace to hydra poddisruptionbudget helm template (#885)

[naohiroo]

Related Issue or Design Document

#884

Checklist

• I have read the contributing guidelines and signed the CLA.
• I have referenced an issue containing the design document if my change introduces a new feature.
• I have read the security policy.
• I confirm that this pull request does not address a security vulnerability.
  If this pull request addresses a security vulnerability,
  I confirm that I got approval (please contact security@ory.com) from the maintainers to push the changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added the necessary documentation within the code base (if appropriate).

Further comments

Summary by CodeRabbit

• Bug Fixes
  • Improved deployment configuration by setting the namespace for disruption budget resources when available, helping them render correctly in namespaced installs.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 0c2a75e2-9e32-4d31-80a8-230223075e70

📥 Commits

Reviewing files that changed from the base of the PR and between a99387e and 130ae33.

📒 Files selected for processing (1)

• helm/charts/hydra/templates/pdb.yaml

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📝 Walkthrough

Walkthrough

The PodDisruptionBudget Helm template for the Hydra chart now conditionally includes a metadata.namespace field, set to .Release.Namespace when that value is present.

Changes

Hydra PDB Namespace Fix

Layer / File(s)	Summary
Conditional namespace in PDB template helm/charts/hydra/templates/pdb.yaml	Adds a conditional block that emits namespace: {{ .Release.Namespace }} under metadata only when .Release.Namespace is set.

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

Possibly related issues

• hydra PodDisruptionBudget helm template is missing namespace metadata #884: Directly fixes the same missing metadata.namespace issue in Hydra's pdb.yaml.
• oathkeeper PodDisruptionBudget helm template is missing namespace metadata #882: Addresses the same PodDisruptionBudget template omission of metadata.namespace.

Possibly related PRs

• ory/k8s#874: Adds the same conditional metadata.namespace pattern to another Hydra manifest (Deployment).

Suggested reviewers: Demonsthere, piotrmsc

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description includes the issue reference and checklist, but the big-picture summary and further comments are left as placeholders.	Add a short summary of why the namespace field is needed, the user impact, and any tests or docs relevant to the fix.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the change: it says the Hydra PDB Helm template adds a namespace, which is the main modification.
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.

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