CBQE-2298: tuq: add split test

Change-Id: I736d79b33af79d9291b74dd96f40111905ed85c2
Reviewed-on: http://review.couchbase.org/39209
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>