name and description are misleading

[l2fprod]

When I provisioned this template through https://cloud.ibm.com/catalog/content/LAMP, I thought you were asking for the name of an existing SSH key in my IaaS -- which is what I would expect.

But instead you are looking for the content of my public key.

LAMP/vm.tf

Line 67 in d8e372f

variable "ssh_key" {

Instead I'd like to be able to specify the name of an existing key -- my key that I use with other VSIs.