[WFLY-543] : Adding the new command "read-boot-errors" available from core-service=management to list all operations that failed during boot.
It displays all boot errors with the failed operation and the failure description / exception of the error.
Filtering boot-errors on operation addresses for making them visible.
Moving all core code from ParseAndMarshalModelsTestCase in ModelParserUtils so that we can close WFLY-CORE-11.
https://issues.jboss.org/browse/WFLY-3614 enhance patch command to display applied patch's description (in addition, unified the output with the 'patch inspect' and added a verbose mode)
Added SyslogHandlerResourceDefinition to the set of handlers that are considered when detecting unused handlers.