Comment 3 for bug 1621056

Reviewed: https://review.openstack.org/367850
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=c4ea02a3cd32a0dd8e1ba1db36b81ea89717d02a
Submitter: Jenkins
Branch: stable/mitaka

commit c4ea02a3cd32a0dd8e1ba1db36b81ea89717d02a
Author: dmburmistrov <email address hidden>
Date: Mon Aug 29 18:59:11 2016 +0300

    Use "safe" mirror list on upgrade

    All "safe" repos for using in upgrade will be configured in UI and
    available in Hiera. Then this list will be used to link this mirrors
    to separate "sources.d" directory. This directory will be used to point
    APT another source location. That allows us to get list of packages, which
    will be upgraded with specified in "sources.d" mirrors. Then, available
    packages will be upgraded.

    To keep this process configurable we can specify hash of packages, which
    should be upgraded throw hiera.

    DocImpact

    Closes-bug: #1616553
    Closes-bug: #1621056

    Change-Id: Idf4ff71c04f8a75c572bb24e560b3827f3d55bac