[ChristianZaccaria]

Closes #5448

Summary

The e2e:kubernetes:shared-supervisor-ha task colon-joins three Helm values files in one string:

…/values-high-availability.yaml:deploy/helm/…/values-supervisor-ha.yaml:deploy/…

Anything that scans for container images (grep, image-policy linters, Trivy-style tag checks) reads the middle join as helm/openshell/ci/values-supervisor-ha.yaml:deploy. That is a path list, not an image. Splitting the join across assignments keeps the same OPENSHELL_E2E_KUBE_EXTRA_VALUES contract and --values order, and it scales if a fourth overlay is added.

Changes

• Join the high-availability, supervisor-ha, and TLS overlay paths across assignments in tasks/test.toml.
• Keep the same colon-separated OPENSHELL_E2E_KUBE_EXTRA_VALUES value and caller-overlay append.

Testing

• Checks appropriate to the affected code and behavior pass
• Unit tests added/updated (if applicable)
• E2E tests added/updated (if applicable)

Verified tasks/test.toml still parses and mise still lists e2e:kubernetes:shared-supervisor-ha.

Checklist

• Follows Conventional Commits
• Commits are signed off (DCO)
• Architecture docs updated (if applicable)

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[ChristianZaccaria]

I cannot add labels on this repo. Could someone please add area:build so review readiness can assign reviewers. This PR only changes a mise e2e task in tasks/test.toml.