Fixing Karaf Webconsole logs

Newer version of Pax Logging is necessary to fix not working logs in Karaf Webconsole.

Solution was found here: https://issues.apache.org/jira/browse/KARAF-2481
However, this fix targets only Karaf 3.0.2 and ODL is still using version 3.0.1.
That's why manual replacement of Pax Logging service/api was necessary.
After Karaf will be updated to version >3.0.2 this fix would not be required more.

Change-Id: Icff9bfe24dd728abe93719bf7f0ea23220a46e84
Signed-off-by: Andrej Kincel <akincel@cisco.com>