Updates from bitrot livestream (#16)

- Remove minor version pin for postgres versions (i.e. 12.5 -> 12)
- Update s3 config to use separate versioning and encryption terraform resources
- Use bucket_prefix instead of bucket for bucket naming to avoid name conflicts

Stream: https://youtu.be/KWwKPYuOGBw

07-managing-multiple-environments/workspaces/main.tf

@@ -35,10 +35,10 @@ module "web_app" {
   source = "../../06-organization-and-modules/web-app-module"
 
   # Input Variables
-  bucket_name      = "devops-directive-web-app-data-${local.environment_name}"
+  bucket_prefix    = "web-app-data-${local.environment_name}"
   domain           = "devopsdeployed.com"
   environment_name = local.environment_name
-  instance_type    = "t2.small"
+  instance_type    = "t2.micro"
   create_dns_zone  = terraform.workspace == "production" ? true : false
   db_name          = "${local.environment_name}mydb"
   db_user          = "foo"