Comment 7 for bug 1730650

Reviewed: https://review.openstack.org/519343
Committed: https://git.openstack.org/cgit/openstack/python-tripleoclient/commit/?id=d43034f29df333db726553ac94421c8c931892f4
Submitter: Zuul
Branch: stable/pike

commit d43034f29df333db726553ac94421c8c931892f4
Author: Martin André <email address hidden>
Date: Thu Nov 9 09:50:46 2017 +0100

    Ignore missing rendered heat envs in prepare

    Since we use j2 templates for some of the heat environments, and at the
    moment they are rendered when uploading them to swift at the beginning
    of the deployment workflow, it is possible that one of the heat
    environment file passed to the prepare command is, or references a file
    that is, not yet rendered.

    This commit implements a custom object_request() function that makes
    process_multiple_environments_and_files() ignore the missing files.

    Change-Id: I6f31898ca3db9563d3d8e8e6e0a9f0cdaebf24ca
    Co-Authored-By: Thomas Hervé <email address hidden>
    Closes-Bug: #1730650
    (cherry picked from commit a68cbfd5157ec367020a753905f7e1802d127a0f)