Comment 4 for bug 1436806

Reviewed: https://review.openstack.org/166774
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=465825cb450236c97adb0a18fa236e7c121f6805
Submitter: Jenkins
Branch: master

commit 465825cb450236c97adb0a18fa236e7c121f6805
Author: Alexander Gordeev <email address hidden>
Date: Mon Mar 23 13:29:28 2015 +0300

    IBP: fix apt pinning in build script

    We have to use `archive` name in APT pinning because `suite` is actually
    an archive name. For instance, the following upstream Ubuntu repo

        deb http://archive.ubuntu.com/ubuntu/ trusty-updates main

    has the following attributes in APT pinning

        a=trusty-updates, n=trusty, c=main

    Obviously, it's wrong to use `n=` (codename) for matching suite.

    Besides this, since now we're generating a few pinnings for the source
    like

        deb http://archive.ubuntu.com/ubuntu/ trusty main restricted

    because the following line

        a=trusty, c=main, c=restricted

    will apply pinning only for the `restricted` section.

    Also, it skips a repo from pinning if its priority isn't set.

    Change-Id: Ibe5c99910f70312ea4e4bd0c642cd8f31ddc526b
    Implements: blueprint consume-external-ubuntu
    Closes-Bug: #1436806