feat: add ssh key pair module

Fixes issue #12

modules/ssh/main.tf

@@ -0,0 +1,4 @@
+resource "aws_key_pair" "jenkins_key" {
+  key_name   = "ec2_key"
+  public_key = file("~/.ssh/${var.ssh_key_file}")
+}

modules/ssh/variables.tf

@@ -0,0 +1 @@
+variable "ssh_key_file" {}

root/example.tfvars

@@ -8,3 +8,4 @@ root_account_ids              = []
 ami_prefix                    = ""
 instance_type                 = ""
 domain_name                   = ""
+ssh_key_file                  = ""

root/main.tf

@@ -18,3 +18,8 @@ module "ec2" {
   igw_id           = module.vpc.igw_id
   vpc_id           = module.vpc.vpc_id
 }
+
+module "ssh" {
+  source       = "../modules/ssh"
+  ssh_key_file = var.ssh_key_file
+}

root/variables.tf

@@ -56,6 +56,11 @@ variable "domain_name" {
   default     = "domain.tld"
 }
 
+variable "ssh_key_file" {
+  description = "ssh-keygen generated public RSA key to SSH into an EC2 instance"
+  type        = string
+  default     = "ec2_ssh_key.pub"
+}
 
 # variable "profile" {
 #   description = "AWS profile"