Revert "WFLY-471 Disabling JAX-RS related tests failing due to upgrade to HV 5" due to JAX-RS breakage

This reverts commit 4939e565709ede104a76b86ff9ce38e53e4cb58f.
Revert "WFLY-471 Updating to HV 5.0.1.Final" due to JAX-RS breakage

This reverts commit e5135df9833d6dc0391c21cfdb4910233688b950.
Fixes for latest Undertow
Fix some issues with servlet role mapping and run-as
Undertow 1.0.0.Alpha14
Minor cleanup
Prevent spurious creation of permission objects in many cases when security manager checking is disabled
Add privileged utility methods for the most common privileged actions which avoids the need to use expensive doPrivileged and checkPermission calls
Move to the privileged methods on WildFlySecurityManager