kubectl-tree is not packaged, and its own completion only covers flags while its `completion` scripts register for `kubectl` itself.
- add kubectl-tree 0.6.0 for el9 and fedora 42-44, checksum-verified via artifactapi
- add `kubectl_complete-tree` delegating flags to kubectl-tree and KIND/NAME to `kubectl get` completion
Requires terraform-artifactapi github allowlist entries for ahmetb/kubectl-tree.
Reviewed-on: #180
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
unkin-agent