CBQE-0: change timeout for getting build

Change-Id: If2a7e54a173a6f27503c1eed1ad6576b9cb602b9
Reviewed-on: http://review.couchbase.org/27282
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>