* igorw/ipv6:
[HttpFoundation] minor optimization
minor adjustments suggested by vicb
[HttpFoundation] IPv6 support for RequestMatcher
[HttpFoundation] refactor RequestMatcherTest to use dataProvider
[Validator] use full iPv6 regex
[Validator] add IPv6 support to UrlValidator
[HttpFoundation] add IPv6 support to Request
[HttpFoundation] test Request::create with an IP as host name
[HttpFoundation] refactor Request::getClientIp test
This adds lazy loading for firewall configurations. This is useful when you have multiple firewalls, only the firewalls which are actually needed to process the Request are initialized. So, your event dispatcher is not as costly to initialize anymore.
It also implements re-using of RequestMatchers if all matching rules are the same, and exposes the remaining rules which are already implemented by the request matcher (host, ip, methods) in the access-control section
