WFLY-1733 Add subtree views to CLI GUI
[WFLY-1748] Upgrade jboss-stdio
[WFLY-245] Add operations to control status of xsite backups for infinispan subsystem.
[WFLY-245] Add test case for xsite backupFor option to Infinispan subsystem.
[WFLY-245] Some small fixes to backupFor operation definitions.