LTTng JUL JNI handler does not distinguish between sessions
If, for a given e.g. root session daemon, we start 2 sessions (sessions A and B), each with JUL events (targeting different loggers), those events will be logged into both sessions, rather than having the events enabled for session A into session A, and likewise for B.
We should filter by logger name at the JUL JNI interface at UST level to fix this issue. This fix should not require changes to UST, only changes to session daemon.