Comment 2 for bug 1835959

Reviewed: https://review.opendev.org/669011
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=4ec57c60f30f994d8bf36021ff12670e6c8c77b5
Submitter: Zuul
Branch: master

commit 4ec57c60f30f994d8bf36021ff12670e6c8c77b5
Author: Alex Schultz <email address hidden>
Date: Wed Jul 3 19:02:20 2019 -0600

    Add facter cache for container configurations

    Rather than running all the facts for every invocation of
    container-puppet.py, let's cache the facts for the entire container
    config step. This is similar to what used to happen when we ran puppet
    in a single instance for a given step. This improves the time it takes
    puppet tp execute within the containers. When systems have large number
    of interfaces, the fact generation for puppet can come to a crawl given
    that puppet is not supposed to be invoked multiple times in parallel. By
    pre-caching the facts, we eliminate the need for puppet to do the
    network (and other fact) related lookups when running container
    configuration generation.

    Closes-Bug: #1835959
    Change-Id: I6ee3849ff380304a184638493f33882b813bfdff