JBQA-8017 Tests for size rotating file handler
Amendments according to code comments by jamezp
clear logs while server is stopped
WFLY-529 CDI and Bean Validation integration for method validation

- Add a module for the Hibernate Validator CDI portable extension
- Replace the delegate of LazyValidatorFactory with the CDI-enabled ValidatorFactory provided by the CDI portable extension
Restore original module name for mod_cluster extension in default configuration files.
[WFLY-1430] First cut of cluster subsystem.
[WFLY-1430] Add in XML processing, test cases.
[WFLY-1430] Fix up org.wildfly.extension.cluster module integration.
[WFLY-1430] Add in custom resources for name and deployment.
[WFLY-1430] Reorganize ManagementAPIClusterSupport installation and start/stop.
[WFLY-1430] Rename module artifact.
[WFLY-1430] Introduce i18n changes. Tidy up exception handling in attribute handlers.
[WFLY-1430] Add VIEW_HISTORY and RPC_STATS attributes.
[WFLY-1430] Add OPERATION_STATS, RPC_STATS, TXN_STATS, DISTRIBUTION attributes.
[WFLY-1430] Mark cache responses as possibly not in view; add logging.