CBQE-2199: add more datetime tuq tests

Change-Id: Ie3883e83052825469d49bfcca1c1ef4638e0239e
Reviewed-on: http://review.couchbase.org/36458
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>