Emulate effects of `j.u.l.Logger.setLevel`#3125

ppkarwasz merged 3 commits into2.xapache/logging-log4j2:2.xfrom

fix/2.x/3119_set_level_call_parentapache/logging-log4j2:fix/2.x/3119_set_level_call_parentCopy head branch name to clipboard