JSONなアレに疲れたアナタに贈るGoogle Cloud Deployment Managerのススメ ref: http://qiita.com/marcy-terui/items/1d19aa089fd076873180

file0.yml

imports:
- path: path/to/template.yml
- path: path/to/template.jinja
- path: path/to/template.py

file1.txt

{
  "AWSTemplateFormatVersion" : "2010-09-09",
  "Description" : "sample",
  "Resources" : {
    "MyDB" : {
      "Type" : "AWS::RDS::DBInstance",
      "Properties" : {
        "DBName" : "DBName" ,
        "AllocatedStorage" : "5",
        "DBInstanceClass" : "db.t2.small",
        "Engine" : "MySQL",
        "EngineVersion" : "5.6.19",
        "MasterUsername" : "DBUser",
        "MasterUserPassword" : "DBPassword",
        "DBParameterGroupName" : { "Ref" : "MyRDSParamGroup" }
      }
    },
    "MyRDSParamGroup" : {
      "Type": "AWS::RDS::DBParameterGroup",
      "Properties" : {
        "Family" : "MySQL5.6",
        "Description" : "CloudFormation Sample Database Parameter Group",
          "Parameters" : {
            "character-set-server" : "utf8mb4",
            "collation-server": "utf8mb4_general_ci"
        }
      }
    }
  }
}

file2.yml

resources:
- name: sample-cloudsql
  type: sqladmin.v1beta4.instance
  properties:
    region: us-central
    instanceType: CLOUD_SQL_INSTANCE
    settings:
      tier: D1
      activationPolicy: ON_DEMAND
- name: sample_database
  type: sqladmin.v1beta4.database
  properties:
    instance: $(ref.sample-cloudsql.name)
    charset: utf8mb4
    collation: utf8mb4_general_ci