* 4.0:
[HttpKernel] Make ServiceValueResolver work if controller namespace starts with a backslash in routing
Add d-block to bootstrap 4 alerts
[Console] Don't go past exact matches when autocompleting
[DI] Improve error message for non-autowirable scalar argument
Disable autoloader call on interface_exists check
[Validator] Fix LazyLoadingMetadataFactory with PSR6Cache for non classname if tested values isn't an existing class
[HttpKernel] Dont create mock cookie for new sessions in tests