Cannot import VM template from private registry

Issue

• We have added a custom dataImportCronTemplate to the HyperConverged object:

  apiVersion: hco.kubevirt.io/v1beta1
  kind: HyperConverged
  metadata:
  name: kubevirt-hyperconverged
  namespace: openshift-cnv
  spec:
  dataImportCronTemplates:
  - metadata:
      annotations:
        cdi.kubevirt.io/storage.bind.immediate.requested: "true"
      name: my-fedora
    spec:
      managedDataSource: my-fedora
      retentionPolicy: None
      schedule: '*/5 * * * *'
      template:
        spec:
          source:
            registry:
              certConfigMap: registry-ca-cert
              url: docker://registry.example.com:5000/fedora:latest
              pullMethod: node
          storage:
            resources:
              requests:
                storage: 30Gi
  

• The private registry uses a certificate signed by an internal CA.

• The image import fails with a TLS error: "tls: failed to verify certificate: x509: certificate signed by unknown authority"