Comment 8 for bug 1830147

Reviewed: https://review.opendev.org/666074
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=588c1076c3da583e9f654dcfbed5fde13788dc0d
Submitter: Zuul
Branch: stable/stein

commit 588c1076c3da583e9f654dcfbed5fde13788dc0d
Author: Mark Goddard <email address hidden>
Date: Thu May 23 10:25:28 2019 +0100

    Use td-agent-gem to install fluentd monasca plugin on ubuntu

    If monasca is enabled on ubuntu, we see the following error in fluentd:

    [error]: config error file="/etc/td-agent/td-agent.conf"
    error_class=Fluent::ConfigError error="Unknown output plugin 'monasca'.
    Run 'gem search -rd fluent-plugin' to find plugins"

    This is because we use 'fluent-gem install' to install the gem, which
    works on CentOS but on Ubuntu it is necessary to use 'td-agent-gem
    install'.

    Change-Id: I515f9764ca93a41a871e520696193a9298856d08
    Closes-Bug: #1830147
    (cherry picked from commit c585ca5055c7a92fdbe5826030d3529e5c397540)