CBQE-1726: fix bucket argument

Change-Id: I88f43577f5bb9d407d74fc102abfd67f1ff84bac
Reviewed-on: http://review.couchbase.org/30780
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>