move data_gen_util to integration-tests

I want it in client-test and a client -> tools dependency feels awkward.

Change-Id: I4895f66ffff940c9215f948512f783d44cf1d924
Reviewed-on: http://gerrit.cloudera.org:8080/14532
Reviewed-by: Alexey Serbin <aserbin@cloudera.com>
Tested-by: Kudu Jenkins
(cherry picked from commit 899c8bfa648becb6729b744e81ab95aef3871c31)
Reviewed-on: http://gerrit.cloudera.org:8080/14536
Reviewed-by: Adar Dembo <adar@cloudera.com>
8 files changed