Comment 6 for bug 1318375

Reviewed: https://review.openstack.org/114120
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=f4d3facdf4b6ec8ee0dcacc7be8999731c68a8ec
Submitter: Jenkins
Branch: master

commit f4d3facdf4b6ec8ee0dcacc7be8999731c68a8ec
Author: Matthew Oliver <email address hidden>
Date: Thu Aug 14 14:39:18 2014 +1000

    Treat 404s as 204 on object delete in proxy

    This change adds an optional overrides map to _make_request method
    in the base Controller class.

      def make_requests(self, req, ring, part, method, path, headers,
                        query_string='', overrides=None)

    Which will be passed on the the best_response method. If set and
    no quorum it reached, the override map is used to attempt to find
    quorum.

    The overrides map is in the form:

        { <response>: <override response>, .. }

    The ObjectController, in the DELETE method now passes an override map
    to make_requests method in the base Controller class in the form of:

        { 404: 204 }

    Statuses/responses that have been overridden are used in calculation
    of the quorum but never returned to the user. They are replaced by:

        (STATUS, '', '', '')

    And left out of the search for best response.

    Change-Id: Ibf969eac3a09d67668d5275e808ed626152dd7eb
    Closes-Bug: 1318375