Comment 2 for bug 1705200

Reviewed: https://review.openstack.org/485083
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=72ee7dac7c2471efec145d04158e801379b5fa3a
Submitter: Jenkins
Branch: master

commit 72ee7dac7c2471efec145d04158e801379b5fa3a
Author: Jeffrey Zhang <email address hidden>
Date: Sun Jun 18 20:59:28 2017 +0800

    Support multi local chrony servers

    In the old implementation, if there is no external ntp server, only one
    local chrony server is supported. If multi chrony-server is configured,
    chrony client can not sync with them.

    In the new implementation
    * use VIP to connect chrony-server, which ensure multi local chrony
      servers are supported.
    * chrony servers depend on VIP. So chrony-server group should be
      the same with haproxy group.
    * prevent chrony client sync from itself.
    * Change owner to chrony:kolla for chrony log folder
    * fix keysfile path
    * use chrony user for centos and ubuntu image
    * fix permission issue for /var/lib/chrony folder

    Closes-Bug: #1705200
    Change-Id: I6e85fda9824b5ddc7a96895425c5932a3566c27e