CBQE-0: fix indexes tests tuq

Change-Id: Ife5c7e913b1bedec7a06ed148fbeb5ed0eef68ed
Reviewed-on: http://review.couchbase.org/30957
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>