CCINFRA-12540 Add Helm hooks to jobs for automatic recreation on deploy

[igoralveslima]

Summary

• Fixes Job deployment failures caused by Kubernetes Job immutability
• Adds Helm hook annotations to automatically delete old jobs before creating new ones
• Jobs now support configurable hook behavior (hook type, weight, delete policy)

Changes

• Added helm.sh/hook annotation to jobs.yaml (defaults to pre-upgrade,pre-install)
• Added helm.sh/hook-delete-policy annotation (defaults to before-hook-creation)
• Added helm.sh/hook-weight annotation for execution order control (defaults to "0")
• Bumped chart version from 1.8.20 to 1.8.21

Technical Details

Kubernetes Jobs are immutable resources - once created, their spec cannot be changed. Previously, when job definitions changed between deploys, Helm would attempt to update the existing Job, causing failures.

This change adds Helm hook annotations that:

1. Run jobs during the pre-upgrade/pre-install lifecycle phase
2. Delete old jobs before creating new ones
3. Allow job definitions to be updated on each deploy

This matches the pattern already used in pre-release-job.yaml.

Configuration

Jobs can override the default hook behavior:

jobs:
  - name: my-job
    command: ['echo', 'hello']
    hook: "pre-upgrade,pre-install"  # optional
    hookWeight: "0"                   # optional
    hookDeletePolicy: "before-hook-creation"  # optional

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