bigip-3nic-deploy example fails

[mjmenger]

After running terraform init and terraform plan in the examples/bigip-3nic-deploy directory with the following inputs;

var.location
  Resource Group Location

  Enter a value: west-us-2

var.nb_nics
  Specify the number of nic interfaces

  Enter a value: 3

var.nb_public_ip
  Number of public IPs to assign corresponding to one IP per vm. Set to 0 to not assign any public IP addresses.

  Enter a value: 1

the following error returned

Error: Invalid index

  on ../../outputs.tf line 29, in output "onboard_do":
  29:   value = var.nb_nics > 1 ? (var.nb_nics == 2 ? data.template_file.clustermemberDO2[0].rendered : data.template_file.clustermemberDO3[0].rendered) : data.template_file.clustermemberDO1[0].rendered
    |----------------
    | data.template_file.clustermemberDO3 is empty tuple

The given key does not identify an element in this collection value.

[RavinderReddyF5]

Thanks for your time and reviewing this module, sure will lookinto issues and work on fixing