IssuerRef references a properly configured ACME-type Issuer which should
be used to create this Order.
If the Issuer does not exist, processing will be retried.
If the Issuer is not an 'ACME' Issuer, an error will be returned and the
Order will be marked as failed.
group
string
Group of the issuer being referred to.
Defaults to 'cert-manager.io'.
kind
string
Kind of the issuer being referred to.
Defaults to 'Issuer'.
name
string required
Name of the issuer being referred to.