[WFLY-4089] Correctly handle comments and force use of UTF-8 for ServerContainerInitializer.
Merge pull request #6966 from doctau/WFLY-4089

[WFLY-4089] Correctly handle comments and force use of UTF-8 for ServerC...
WFLY-4101 Make sure HttpServletRequest.logout() and Session.invalidate() trigger an AuthenticationManager logout