Comment 4 for bug 1741130

Reviewed: https://review.openstack.org/531027
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart/commit/?id=ad321787b1e3a7723d184ca1c94d22c2a4a87298
Submitter: Zuul
Branch: master

commit ad321787b1e3a7723d184ca1c94d22c2a4a87298
Author: Wes Hayutin <email address hidden>
Date: Wed Jan 3 17:26:58 2018 -0500

    add env for ci.centos to turn off tempest

    ci.centos can not run tempest. This creates
    a default config for ci.centos where we use
    only ping.

    Closes-Bug: #1741130
    Change-Id: I5449adb336b7bf88559b0202218f365ae40b87c7