[CDH5] Disable ACL tests

The tests pass every time locally (in a 60 minute run), but fail
intermittently on our build machines.

Change-Id: I62d5ea0df8c42728a538b29bd16006be3179bfd3
Reviewed-on: http://gerrit.ent.cloudera.com:8080/3489
Reviewed-by: Ishaan Joshi <ishaan@cloudera.com>
Tested-by: jenkins