Modifying a virtual machine's interface requires the datacenter

The current implementation of #update_vm_interface at https://github.com/fog/fog-vsphere/blob/master/lib/fog/vsphere/requests/compute/modify_vm_interface.rb#L19 is not functioning.

The call to create_nic_backing requires the datacenter (silently) to be provided, otherwise the network will not be found an a nil error will be thrown from #list_container_view.

def update_vm_interface(vmid, options = {})
  raise ArgumentError, 'instance id is a required parameter' unless vmid

  interface = get_interface_from_options(vmid, options)
  raw_interface = get_raw_interface(vmid, key: interface.key)
  if options[:network]
    interface.network = options[:network]
    backing = create_nic_backing(interface, {})
    raw_interface.backing = backing
  end
  apply_options_to_raw_interface(raw_interface, options)
  spec = {
    operation: :edit,
    device: raw_interface
  }
  vm_reconfig_hardware('instance_uuid' => vmid, 'hardware_spec' => { 'deviceChange' => [spec] })
end

fog / fog-vsphere

Modifying a virtual machine's interface requires the datacenter #139