Add Cloudflare-sg module.

aws/cloudflare-sg/README.md

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+# aws/cloudflare-sg - Cloudflare Security Group
+This module is used to create a security group to allow HTTPS/443 traffic from
+Cloudflare IP addresses only.
+
+## What this does
+
+ - Create security group allowing HTTPS traffic on port 443 from Cloudflare IPs
+
+## Required Inputs
+
+ - `vpc_id` - ID of VPC to place security group
+
+## Outputs
+
+ - `id` - ID of security group created
+ - `name` - Name of security group created
+
+## Example Usage
+
+```hcl
+module "cloudflare-sg" {
+  source = "github.com/wycliffe-usa/terraform-modules//aws/cloudflare-sg"
+  vpc_id = "${var.vpc_id}"
+}
+```

aws/cloudflare-sg/main.tf

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+module "cf_ips" {
+  source = "github.com/wycliffe-usa/terraform-modules//cloudflare/ips?ref=1.7.1"
+}
+
+resource "aws_security_group" "cloudflare_https" {
+  name        = "cloudflare-https"
+  description = "Allow HTTPS traffic from Cloudflare"
+  vpc_id      = var.vpc_id
+}
+
+resource "aws_security_group_rule" "cloudflare_ipv4" {
+  type              = "ingress"
+  from_port         = 443
+  to_port           = 443
+  protocol          = "tcp"
+  security_group_id = aws_security_group.cloudflare_https.id
+  cidr_blocks       = module.cf_ips.ipv4_cidrs
+}

aws/cloudflare-sg/outputs.tf

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+output "id" {
+  value = aws_security_group.cloudflare_https.id
+}
+
+output "name" {
+  value = aws_security_group.cloudflare_https.name
+}

aws/cloudflare-sg/vars.tf

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+variable "vpc_id" {
+  type = string
+}

aws/cloudflare-sg/versions.tf

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+
+terraform {
+  required_version = ">= 1.0"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = ">= 5.0.0, < 6.0.0"
+    }
+  }
+}