Upload of qcow2 image to RHV using the Ansible module ovirt_disk fails if the size is not specified

Issue

We upload a qcow2 disk with the Ansible module ovirt_disk and we don't specify the disk size:

      - name: Upload qcow2 image and create Disk
        ovirt_disk:
          auth: "{{ ovirt_auth }}"
          name: "Disk-test"
          format: cow
          sparse: true
          sparsify: true
          bootable: yes
          upload_image_path: /tmp/Fedora-Cloud-Base-32-1.6.x86_64.qcow2
          storage_domain: data-block
          interface: virtio

Based on the ovirt_disk documentation:

"Note if size is not specified the size of the disk will be determined by the size of the specified image."

The upload task finally fails.