cot edit-hardware doesn't set nic-type when no pre-existing nics

[glennmatthews]

$ cot edit-hardware COT/tests/minimal.ovf -o temp.ovf --nics 1 --nic-type e1000
    INFO: Loading 'COT/tests/minimal.ovf' as OVF
    INFO: OVF version is 1.x
    INFO: OVF product class None --> platform GenericPlatform
 WARNING: No items of type ethernet found. Nothing to do.

Unexpected warning here!

    INFO: Updating NIC count in OVF under profile None to 1
 WARNING: No existing items of type ethernet found. Will create new ethernet from scratch.
    INFO: Added new ethernet under [None], instance is 1
    INFO: Writing out to file temp.ovf
$ cat temp.ovf
<?xml version='1.0' encoding='utf-8'?>
<ovf:Envelope xmlns:ovf="http://schemas.dmtf.org/ovf/envelope/1" xmlns:rasd="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData">
  <ovf:References />
  <ovf:VirtualSystem ovf:id="x">
    <ovf:Info />
    <ovf:VirtualHardwareSection>
      <ovf:Info />
      <ovf:Item>
        <rasd:ElementName>Ethernet1</rasd:ElementName>
        <rasd:InstanceID>1</rasd:InstanceID>

No ResourceSubType here!

        <rasd:ResourceType>10</rasd:ResourceType>
      </ovf:Item>
    </ovf:VirtualHardwareSection>
  </ovf:VirtualSystem>
</ovf:Envelope>