Comment 5 for bug 1862211

Reviewed: https://review.opendev.org/712066
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=3982d8d54206017d20e1ab8bc03cec965ad37ec1
Submitter: Zuul
Branch: stable/train

commit 3982d8d54206017d20e1ab8bc03cec965ad37ec1
Author: Will Szumski <email address hidden>
Date: Thu Feb 6 17:10:06 2020 +0000

    Delete stale fluent config on restart

    We already only include .conf files in fluent.conf:

    (fluentd)[fluentd@cpu-e-1041 /etc/fluentd]$ cat fluent.conf
    @include input/*.conf
    @include filter/*.conf
    @include format/*.conf
    @include output/*.conf

    so this change should not cause ill effect. This works because of the
    merge option in config files:

    merge: merges the source directory into the target directory instead of
    replacing it. Boolean, defaults to false.

    see https://docs.openstack.org/kolla/latest/admin/kolla_api.html#kolla-api-external-config

    Change-Id: I28f63ec81f1ea5bc4a213d053bfb2c04388d5925
    Closes-Bug: #1862211
    (cherry picked from commit e7870e9df9e416b1b342ad6264bb66378fe62b3f)