Add doctrine configuration with default value

This allows developer to follow the origin of an SQL request. Pretty cool for performance tuning!

Author: jacquesbh

config/packages/doctrine.yaml

@@ -10,8 +10,11 @@ doctrine:
         driver: 'pdo_mysql'
         server_version: '5.7'
         charset: UTF8
-
         url: '%env(resolve:DATABASE_URL)%'
+        connections:
+            default:
+                # Turn this on if you want to profile the origin of an SQL request during development
+                profiling_collect_backtrace: false
     orm:
         auto_generate_proxy_classes: '%kernel.debug%'
         auto_mapping: true