Invalid order when cert-manager is used with TLS enabled

[Diogo Kiss]

Version

CockroachDB Helm chart: 7.0.1 (https://charts.cockroachdb.com/)
(I strongly suspect that the same issue hits the latest version too)

CockroachDB Helm chart configuration

cockroachdb:
  tls:
    enabled: true
    certs:
      selfSigner:
        enabled: false
      certManager: true
      useCertManagerV1CRDs: true
      tlsSecret: true
      certManagerIssuer:
        kind: ClusterIssuer

ClusterIssuer

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt-prod
spec:
  acme:
    email: [e-mail]
    privateKeySecretRef:
      name: letsencrypt-key-prod
    server: https://acme-v02.api.letsencrypt.org/directory
    solvers:
    - dns01:
        cloudDNS:
          project: <my-gcp-project>

Error

Events:
  Type     Reason           Age   From                                          Message
  ----     ------           ----  ----                                          -------
  Warning  InvalidOrder     13m   cert-manager-certificaterequests-issuer-acme  The CSR PEM requests a commonName that is not present in the list of dnsNames or ipAddresses. If a commonName is set, ACME requires that the value is also present in the list of dnsNames or ipAddresses: "root" does not exist in [] or []
  Normal   cert-manager.io  13m   cert-manager-certificaterequests-approver     Certificate request has been approved by cert-manager.io

Related to
cert-manager/cert-manager#2370 (comment)

Potential solutions

1. Add the commonName to the dnsNames list
2. Make the commonName customizable in the Helm chart (I'm not sure whether this would mess with any validation in the application itself though)
3. Both alternatives above

This issue similarly affects the order generated for the node certificate too:

Events:
  Type     Reason           Age    From                                          Message
  ----     ------           ----   ----                                          -------
  Warning  InvalidOrder     2m13s  cert-manager-certificaterequests-issuer-acme  The CSR PEM requests a commonName that is not present in the list of dnsNames or ipAddresses. If a commonName is set, ACME requires that the value is also present in the list of dnsNames or ipAddresses: "node" does not exist in [localhost 127.0.0.1 <cockroachdb.fullname>-public <cockroachdb.fullname>-public.<.Release.Namespace> <cockroachdb.fullname>-public.<.Release.Namespace>.svc.cluster.local *.<cockroachdb.fullname> *.<cockroachdb.fullname>.<.Release.Namespace> *.<cockroachdb.fullname>.<.Release.Namespace>.svc.cluster.local] or []