Comment 5 for bug 1429943

Reviewed: https://review.openstack.org/162813
Committed: https://git.openstack.org/cgit/openstack-dev/devstack/commit/?id=7c4ce9edbad6f3c33469d45be832ebea4a46ff70
Submitter: Jenkins
Branch: master

commit 7c4ce9edbad6f3c33469d45be832ebea4a46ff70
Author: Ian Wienand <email address hidden>
Date: Tue Mar 10 11:32:26 2015 +1100

    Check for new versions of get-pip.py

    People can leave their devstack installs around for a long time, and
    in the mean time new versions of pip can be released.

    The current check does not download a new version if an old one
    exists. We want to check for new versions, but we also don't want the
    gate jobs trying this sometimes unreliable fetch.

    So add a flag-file that tells devstack if it downloaded get-pip.py
    originally. If so, on each run check for a new version using curl's
    "-z" flag to request only files modified since the file's timestamp.

    Change-Id: I91734528f02deafabf3d18d968c3abd749751199
    Closes-Bug: #1429943