text: Title: [bug] Dynaconf list is showing the class notation not the value
  Body: **Describe the bug**
  When using `dynaconf list` having lazy values, the out put is the class notation instead of the formatted value.
  
  **To Reproduce**
  Steps to reproduce the behavior:
  
  Export a variable using a lazy formatter
  
  ```bash
  export DYNACONF_PATH="@format /databases/{env[USER]}"
  ```
  
  On the console run `dynaconf list`
  
  ```
  dynaconf on  master [$] via 🐍 v3.7.0(dynaconf) 
  ❯ dynaconf list                                        
  Working in development environment 
  USERNAME: 'RiverFount'
  DAY: 28.0
  PATH: <dynaconf.utils.parse_conf.LazyFormat object at 0x7fe
  68fecc898>
  ```
  
  What is the actual result.
  
  ```
  PATH: <dynaconf.utils.parse_conf.LazyFormat object at 0x7fe
  68fecc898>
  ```
  
  What I expected to see
  
  ```
  PATH: "@format /databases/{env[USER]}"
  ``` 
  