The Gateway API admission server defaults certificateRefs[].group to ""
when it is omitted. ArgoCD diffed the desired state (no group field) against
the live state (group: "") and flagged every gateway as out of sync.
Fix: explicitly set group: "" in all certificateRefs entries so the
rendered manifest matches the API server's canonical form exactly.
Affected: artifactapi, cattle-system, consul, litellm, paperclip,
puppet (puppetboard + puppetdb), vault.
Reviewed-on: #153
## Summary
- Deploys HashiCorp Vault 2.0.1 using Helm chart 0.32.0 in HA raft mode (5 replicas)
- Configuration modelled on production vault: \`disable_mlock=true\`, headless-DNS retry_join for all 5 pods
- IPC_LOCK capability added via \`server.statefulSet.securityContext.container\`
- 10Gi cephrbd-fast-delete PVC per pod via \`dataStorage\`
- Gateway API: HTTPS gateway + HTTPRoute (443→vault service port 8200) at \`vault.k8s.syd1.au.unkin.net\`
- ArgoCD platform ApplicationSet updated to include vault overlay path
- Injector disabled (no agent sidecar injection needed)
## Requires
- PR #147 (artifactapi: add hashicorp/vault to docker immutable patterns) to be merged first
## Test plan
- [ ] Sandbox tested in \`sandbox-vault\`: all 5 pods Running, raft cluster forming
- [ ] After merge: ArgoCD syncs vault namespace
- [ ] Operator runs \`vault operator init\` to initialize, then unseals all 5 nodes
- [ ] Verify \`vault.k8s.syd1.au.unkin.net\` is accessible via Gateway
Reviewed-on: #148
unkinben