Symfony version(s) affected: 4.4 (probably others to)

Description
When writing configuration for a bundle and you use a integerNode you cannot use paramater values to set this configuration because the value that is passed is a string. Also when you use beforeNormalization to parse string values you will get the parameter name instead of the parameter value you have set for that parameter.

How to reproduce
Add a integer node like:
configuration.php

->integerNode('price')
  ->beforeNormalization()
    ->ifString()
      ->then(
        static function ($value) {
          return (int) $value;
        }
      )
    ->end()
  ->isRequired()
  ->defaultValue(999)
->end()

Set parameter value:
parameters.yaml

parameters:
  price_value: 1000

Use parameter value to set the integerNode:
bundle.yaml

bundel:
 price: "%price_value%"

Now you will get 0 as $value because passed value to beforeNormalization is %price_value% instead of expected 1000

Possible Solution

1. Maybe we could do the same as env and do type casting when useing parameters values see https://symfony.com/doc/current/configuration/env_var_processors.html that way we can pass it like:

bundel:
 price: "%int:price_value%"

2. Or we could pass the value that is set in parameters so we get 1000 instead of %price_value% when we pass the value to bundle configuration