Comment 6 for bug 1856197

Reviewed: https://review.opendev.org/702739
Committed: https://git.openstack.org/cgit/starlingx/monitor-armada-app/commit/?id=e5ee6b3a07b74479b93fe90eff0662cf81890f73
Submitter: Zuul
Branch: r/stx.3.0

commit e5ee6b3a07b74479b93fe90eff0662cf81890f73
Author: Kevin Smith <email address hidden>
Date: Thu Dec 12 13:08:44 2019 -0500

    Remove unused image references from monitor app

    Remove all references to images that are not used by the app
    to prevent downloading them. Removals include images for
    testing kibana and enabling logstash exporter.

    Also explicitly add a reference to the nginx defaultbackend image
    in the manifest as it fails to appear in the image download
    list in the application images yaml file. This is possibly an
    image parsing issue to be looked at later.

    Change-Id: Id6ec19e6c8e5df4aa543a3e4f6b3c36b954d0971
    Partial-Bug: 1856197
    Signed-off-by: Kevin Smith <email address hidden>
    (cherry picked from commit f6010f4ed211817a0f0fab8ef9aa175085068f0e)