Public issuer set to acme

[nlandeker]

When setting up pulsar chart with

certs:
    manager:
      enabled: true
    internal_issuer:
      enabled: true
      type: selfsigning
    public_issuer:
      enabled: true
      type: acme
  issuers:
      acme:
        email: <ommited>
        server: https://acme-v02.api.letsencrypt.org/directory
        solver: clouddns
        solvers:
          clouddns:
            project: "<ommited>"
            serviceAccountSecretRef:
              name: "<ommited>"
              key: <ommited>"

the install/update results in:

Error: UPGRADE FAILED: error validating "": error validating data: [ValidationError(StatefulSet.spec.template.spec.volumes[3].secret.items[0].key): invalid type for io.k8s.api.core.v1.KeyToPath.key: got "array", expected "string", ValidationError(StatefulSet.spec.template.spec.volumes[3].secret.secretName): invalid type for io.k8s.api.core.v1.SecretVolumeSource.secretName: got "array", expected "string"]