commonName for cluster TLS cert is hard-coded to kong_cluster

[mqmr]

[not a contribution]

commonName for cluster TLS cert is hard-coded to kong_cluster and not possible to change - https://github.com/Kong/charts/blob/8173cd85bfc43e41788deb1f29451cee11de7437/charts/kong/templates/certificate.yaml#L33

Even when certificates.cluster.commonName is set to a different value, that template is rendered with commonName: kong_cluster anyway.

That could cause a problem if an Issuer is configured to issue TLS certs for a specific domain.
It would be great if that field is configurable.

Thank you

[rmblau]

I have also observed this behavior