Comment 36 for bug 1590608

Reviewed: https://review.openstack.org/385819
Committed: https://git.openstack.org/cgit/openstack/panko/commit/?id=6312c8e7b4bf2dd0afbeb19819779b78ddf3e942
Submitter: Jenkins
Branch: stable/newton

commit 6312c8e7b4bf2dd0afbeb19819779b78ddf3e942
Author: Hanxi Liu <email address hidden>
Date: Mon Oct 10 16:39:04 2016 +0800

    Add http_proxy_to_wsgi to api-paste

    This sets up the HTTPProxyToWSGI middleware in front of Panko. The
    purpose of thise middleware is to set up the request URL correctly in
    case there is a proxy (For instance, a loadbalancer such as HAProxy)
    in front of Panko.

    So, for instance, when TLS connections are being terminated in the
    proxy, and one tries to get the versions from the / resource of
    Aodh, one will notice that the protocol is incorrect; It will show
    'http' instead of 'https'. So this middleware handles such cases.
    Thus helping Keystone discovery work correctly.

    The HTTPProxyToWSGI is off by default and needs to be enabled via a
    configuration value.

    Change-Id: Ifa9dad55cfedeb8b804d675d3d4856af6096b039
    Closes-Bug: #1590608
    (cherry picked from commit 90faa85ecc6cc4e6875c5cb14285f20104830b69)