[K4.1] Pax Logging: Sift appender

[Oliver Lietz]

hi all,

the sifting appender was removed from org.ops4j.pax.logging.cfg with "Switch 
to log4j v2" (KARAF-4189 and KARAF-4190).

How do I have to configure Pax Logging in Karaf to get back a log per bundle?

Thanks,
O.