Comment 2 for bug 1477172

Reviewed: https://review.openstack.org/205252
Committed: https://git.openstack.org/cgit/openstack/diskimage-builder/commit/?id=570ecf16a593a6dc75e2ad0f31b28043aaa548ed
Submitter: Jenkins
Branch: master

commit 570ecf16a593a6dc75e2ad0f31b28043aaa548ed
Author: Abel Lopez <email address hidden>
Date: Thu Jul 23 12:26:53 2015 -0700

    Set and export DIB_RELEASE for centos7

    The default value was set in the centos7 element, but not
    exported, which caused issues in rpm-distro. Also changed
    a test in rpm-distro to only check for DIB_RELEASE > 22
    if it's fedora.

    Closes-Bug: #1477172

    Change-Id: Ib6f4227411c2e8f1965c3b78bc318512c59a7876