Add SSH_PUBLIC_KEY variable

variables.tf

@@ -30,22 +30,6 @@ variable "public_cidr" {
   default = "10.0.1.0/24"
 }
 
-variable "aws_region" {
-  description = "Region Preference"
-  default = "us-west-2"
-}
-
-variable "aws_access_key" {
-  description = "AWS Access Key"
-  type = string
-  sensitive = true
-}
-
-variable "aws_secret_key" {
-  description = "AWS Secret Key"
-  type = string
-  sensitive = true
-}
 variable "name_prefix" {
   description = "The prefix for all your resources"
   default     = "demostar"
@@ -64,5 +48,6 @@ variable "disk_size" {
 
 variable "SSH_PUBLIC_KEY" {
   description = "SSH Public Key to add to .authorized_keys for the 'ubuntu' user"
+  default = ""
 }