old_contents: module.exports = {
    secret: 'I\'m SECRET!!',
    port: 5494,
    mysql: {
      user: 'test',
      password: 'password',
      database: {
        session: 'session_test',
        gongmo: 'gongmo_dev'
      },
      host: 'localhost',
      port: 3306
    },
    dimigo: {
      user: 'user',
      password: 'password'
    }
  }
  
new_contents: module.exports = {
    host: 'https://gongmo.dimigo.hs.kr',
    secret: 'I\'m SECRET!!',
    port: 5494,
    mysql: {
      user: 'test',
      password: 'password',
      database: {
        session: 'session_test',
        gongmo: 'gongmo_dev'
      },
      host: 'localhost',
      port: 3306
    },
    dimigo: {
      user: 'dimigoin',
      password: 'dktmsjf#@!'
    }
  }
  
subject: Update config