Disable hijacking of previously configured log handlers
Disable hijacking of previously configured log handlers

See also:

http://docs.celeryproject.org/en/3.1/configuration.html#celeryd-hijack-root-logger

Change-Id: Ibf4618e8bfeb28f877db4a40b4a911ff00442cc9
Reviewed-on: http://review.couchbase.org/82543
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

pavel-paulau/perfrunner,couchbase/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner