Lazy load security:check command

Author: Tobion

sensiolabs/security-checker/4.0/config/packages/dev/security_checker.yaml

@@ -4,5 +4,6 @@ services:
 
     SensioLabs\Security\Command\SecurityCheckerCommand:
         arguments: ['@SensioLabs\Security\SecurityChecker']
+        public: false
         tags:
-            - { name: console.command }
+            - { name: console.command, command: 'security:check' }