Update final chapter for 2nd edition

Author: brikis98

code/terraform/08-terraform-team/live/prod/data-stores/mysql/README.md

@@ -1,4 +1,4 @@
-# MySQL on RDS example (production environment)
+# MySQL on RDS example (prod environment)
 
 This folder contains an example [Terraform](https://www.terraform.io/) configuration that deploys a MySQL database  (using 
 [RDS](https://aws.amazon.com/rds/) in an [Amazon Web Services (AWS) account](http://aws.amazon.com/). 

code/terraform/08-terraform-team/live/prod/data-stores/mysql/terragrunt.hcl

@@ -0,0 +1,14 @@
+terraform {
+  source = "../../../../modules//data-stores/mysql"
+}
+
+include {
+  path = find_in_parent_folders()
+}
+
+inputs = {
+  db_name     = "example_prod"
+  db_username = "admin"
+
+  # Set the password using the TF_VAR_db_password environment variable
+}

code/terraform/08-terraform-team/live/prod/services/webserver-cluster/README.md

@@ -0,0 +1,14 @@
+terraform {
+  source = "../../../../modules//data-stores/mysql"
+}
+
+include {
+  path = find_in_parent_folders()
+}
+
+inputs = {
+  db_name     = "example_stage"
+  db_username = "admin"
+
+  # Set the password using the TF_VAR_db_password environment variable
+}