Comment 5 for bug 1205956

Reviewed: https://review.openstack.org/48556
Committed: http://github.com/openstack/cinder/commit/9e94ef8422ea13763d3c6ce9f34a96ccff56796d
Submitter: Jenkins
Branch: stable/grizzly

commit 9e94ef8422ea13763d3c6ce9f34a96ccff56796d
Author: xiaoxi_chen <email address hidden>
Date: Mon Jul 29 14:21:25 2013 +0800

    Pop out 'offset' and 'limit' before use for filter

    In previous code of _items() from api/v{1,2}/snapshots.py,
    and also the _items)_ from api/v1/volume.py.we didn't pop
    out the 'offset' and 'limit' fields from HTTP get params
    before we use such params for filter.This is the root cause
    for bug #1205956

    For non-admin user, since 'offset' and 'limit' is not in the
    allowed_search_options, so the volumes.remove_invalid_options
    will help to filter them out. As a result, it walks around this
    bug.

    But for admin user,the volumes.remove_invalid_options will not
    try to filter the search_options.So for admin user, the 'limit'
    will appear in search_options, then obviously get no result.

    fixed bug #1205956

    Change-Id: Ib1a66c9d104ac52d6eae18be7f06d02985d4c2fd
    (cherry picked from commit 08af981ffc104d7cb836c1b674e1d73724eeaf88)