Comment 6 for bug 1774123

Reviewed: https://review.openstack.org/571175
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=76a965ad8032e70cdb3286f989f21876e0af7a76
Submitter: Zuul
Branch: master

commit 76a965ad8032e70cdb3286f989f21876e0af7a76
Author: Martin André <email address hidden>
Date: Wed May 30 13:32:01 2018 +0200

    Install sensu from centos-opstools

    This should help improve stability overall, in exchange for slightly
    older package version.

    Cap all the sensu plugins to their known major version that works with
    the ruby interpreter shipped with the current version of
    rhel/centos/oraclelinux -- currently ruby 2.0. All sensu plugins use
    semantic versioning so we're assured they don't introduce breaking
    changes in the capped major version.

    Change-Id: Ic5ca679c40da3e466433b0e04f762d2bbffbf156
    Closes-Bug: #1774123