Fix to deal with multiple env

Author: mpon

terraform/prod/rds.tf

@@ -1,5 +1,5 @@
 resource "aws_db_instance" "db" {
-  identifier                   = "rails-blog"
+  identifier                   = "${local.env}-rails-blog"
   allocated_storage            = 20
   max_allocated_storage        = 1000
   storage_type                 = "gp2"

terraform/prod/variables.tf

@@ -5,7 +5,7 @@ locals {
 
 variable "vpc_cidr" {
   type    = string
-  default = "10.10.0.0/16"
+  default = "10.20.0.0/16"
 }
 
 variable "github_owner" {
@@ -18,6 +18,11 @@ variable "github_repo" {
   default = "rails-blog-example"
 }
 
+variable "target_branch" {
+  type    = string
+  default = "master"
+}
+
 variable "remote_backend" {
   type        = string
   description = "S3 bucket that stores terraform.tfstate"