Don't use ?user_log where ale:log suffices.

Change-Id: Id01c5f954a96fab6593b5e6d9e0a22eda652fcf7
Reviewed-on: http://review.couchbase.org/32390
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>