old_contents: ### Redis Options
  REDIS_HOST="localhost"
  REDIS_PORT=6379
  REDIS_DB=1
  
new_contents: ### Redis Options
  REDIS_HOST="localhost"
  REDIS_PORT=6379
  REDIS_DB=1
  
  ### Celery Options
  BROKER_URL="amqp://guest@localhost//"
  
subject: Modify the default config to include celery options