add example SNS topic for cloudwatch alarm actions (#14)

Author: StefanIancu

example/main.tf

@@ -6,6 +6,10 @@ locals {
   ]
 }
 
+resource "aws_sns_topic" "this" {
+  name = "alarms_topic"
+}
+
 module "dashboard" {
   source  = "../modules/dashboard"
   regions = local.regions
@@ -16,32 +20,36 @@ module "dashboard" {
 }
 
 module "trusted_advisor_alarms" {
-  source  = "../modules/trusted_advisor_alarms"
-  regions = local.regions
+  source                   = "../modules/trusted_advisor_alarms"
+  regions                  = local.regions
+  cloudwatch_alarm_actions = [aws_sns_topic.this.arn]
 
   providers = {
     aws = aws.us-east-1
   }
 }
 
 module "usage_alarms_ap_southeast_1" {
-  source = "../modules/usage_alarms"
+  source                   = "../modules/usage_alarms"
+  cloudwatch_alarm_actions = [aws_sns_topic.this.arn]
 
   providers = {
     aws = aws.ap-southeast-1
   }
 }
 
 module "usage_alarms_eu_west_1" {
-  source = "../modules/usage_alarms"
+  source                   = "../modules/usage_alarms"
+  cloudwatch_alarm_actions = [aws_sns_topic.this.arn]
 
   providers = {
     aws = aws.eu-west-1
   }
 }
 
 module "usage_alarms_us_east_1" {
-  source = "../modules/usage_alarms"
+  source                   = "../modules/usage_alarms"
+  cloudwatch_alarm_actions = [aws_sns_topic.this.arn]
 
   providers = {
     aws = aws.us-east-1