Debug mode is not logging web and sql related loggers

[cldsnchz]

In 2.1, the debug mode (--debug) is not logging in debug the web and sql related loggers, for example: org.hibernate.SQL

The issue seems to be in LoggingApplicationListener, which is setting in DEBUG the group itself (web and sql) instead of resolving the loggers in them, as it does for example when logging.level.sql=true is set.

[wilkinsona]

Thanks for the report and for the initial analysis. I think you're right. LoggingApplicationListener.initializeLogLevel(LoggingSystem, LogLevel), which is what is called when started with --debug, does not take the groups into account so web and sql are passed as-is rather than being expanded to the logger names that each represents.

[wilkinsona]

Closing in favour of #16018.