[WFLY-943] Use of elementFormDefault='unqualified' cannot validate some documents
[WFLY-561] Resource adapter work manager statistics
Make domain mode work in core distribution
[WFLY-2838] Make "cpu" the default mod_cluster load metric
WFLY-2817 MailSessionDefinitionAnnotationParser throws NPE
WFLY-2596 Web JASPIC fixes:

- Adds a JASPICSecurityContext that provides implementation of HttpServletRequest.login() and logout() methods according to the spec;
- Changes JASPI mechanism to use a ConduitWrapper in order to ensure secureResponse() is called before the response is committed;
- Implements logic to handle the javax.servlet.http.registerSession scenario.
Expose 2 more listener configuration options
Add gzip filter support
Upgrade Undertow 1.0.0.CR2
WFLY-918 - initial metrics implemenation
WFLY-2853 - Ignore test
Add handler to deal with 100-continue requests
Fix usage of Infinispan grouping API.
[WFLY-2862] Warn when the file descriptor limit is too low
WFLY-2774 Non-distributed, stateful web applications cannot be load balanced using sticky sessions
Rename *Adapter classes within wildfly-clustering-web-undertow, to distinguish between implementations of Undertow vs clustering API interfaces.
Few components upgrades & some cleanup
ECJ update to make it work beter with JDK8
Merge pull request #5854 from pferraro/undertow

WFLY-2774 Non-distributed, stateful web applications cannot be load balanced using sticky sessions
Merge pull request #5852 from stuartwdouglas/undertow

Add handler to deal with 100-continue requests
Merge pull request #5853 from dmlloyd/wfly-2862-fd-limit

[WFLY-2862] Warn when the file descriptor limit is too low