[WFLY-3429] : Cleaning JBossCachedAuthenticationManager's cache when undeploying a module.
Merge pull request #6842 from ehsavoie/WFLY-3429

[WFLY-3429] : Classloader leak in JBossCachedAuthenticationManager
[WFLY-4000] Upgrade jsf-impl to 2.2.8-jbossorg-2