Delete Object Operation doesn't delete segments when it is multipart object

[SeongSoo Cho]

when delete multipart uploaded object, it must be deleting segments. but swift3 doens't delete segments for multipart uploaded object.

To solve this bug(?), I suggest some idea.

Solution)
1. every delete object operation, check object metadata to ''X-Static-Large-Object' is in.
2. if object has 'X-Static-Large-Object' metadata, add 'multipart-manifest=delete' parameter in original request

The SLO returns 200 OK about 'multipart-manifest=delete' operation. So add HTTP_OK on expect success code map. (request.py)

[Naoto Nishizono (nishizono-naoto)]

I have confirmed the bug details . I will address this .

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/155199

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/155199
Committed: https://git.openstack.org/cgit/stackforge/swift3/commit/?id=14981b47c5d5904b8355a5b1bf9899dd0460b3c5
Submitter: Jenkins
Branch: master

commit 14981b47c5d5904b8355a5b1bf9899dd0460b3c5
Author: Naoto Nishizono <email address hidden>
Date: Thu Feb 12 15:22:37 2015 +0900

    Fix DELETE Object to delete segments when it is multipart object

    When deleting an object created via Multipart Upload, delete both the
    manifest file and the segments by adding "multipart-manifest=delete"
    to the query string.

    This requires an additional HEAD before each DELETE, which adds a good
    bit of overhead. There is a new config option, "allow_multipart_uploads"
    which operators may turn off to avoid this overhead if they know their
    use-case does not require Multipart Uploads.

    Co-Authored-By: Tim Burke <email address hidden>
    Change-Id: Ie1889750b0e6fbe48af0da40596f09ed504b9099
    Closes-Bug: #1420144