Comment 9 for bug 1818081

Reviewed: https://review.openstack.org/643431
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=5a3be01535d3902e1ee21ca070d4918adefc2018
Submitter: Zuul
Branch: stable/rocky

commit 5a3be01535d3902e1ee21ca070d4918adefc2018
Author: Goutham Pacha Ravi <email address hidden>
Date: Wed Mar 13 16:50:27 2019 -0700

    Fix API version inferred w/ un-versioned URLs

    With [1], we fixed the issue with v1 API URLs when
    configuring manila with a reverse proxy, like uwsgi.
    However, the version discovery can be made against a
    "unversioned" URL, i.e, the "/" endpoint.

    Example version discovery target when there's no reverse
    proxy:

       curl -i -X GET www.openstack-overcloud.com:8786/

    Example version discovery target when manila is configured
    with a web proxy:

       curl -i -X GET www.openstack-overcloud.com/shared-file-system/

    Currently, the API assumes that a v2 endpoint is requested
    and hence sets a default API version in the request, which
    results in the wrong headers communicated to the client.

    Fix this issue. The release note added with [1] should
    suffice for this fix.

    [1] I0363d7174f3d7ddefa8ced59b182faed665e9c36
    Change-Id: I50d1024ee8485b8290c24fa850e60755b518fff3
    Closes-Bug: #1818081
    (Cherry-picked from commit 4b0c953f7fe7afbbbece8db7edce8efe69fb4387)