Add request_ids attribute to resource objects

https://review.openstack.org/257199
Dear bug triager. This bug was created since a commit was marked with DOCIMPACT.
Your project "openstack/python-cinderclient" is set up so that we directly report the documentation bugs against it. If this needs changing, the docimpact-group option needs to be added for the project. You can ask the OpenStack infra team (#openstack-infra on freenode) for help if you need to.

commit ec65605eded61801b817cc1e556de0ae8cb74f7c
Author: Ankit Agrawal <email address hidden>
Date: Sun Dec 13 23:59:38 2015 -0800

    Add request_ids attribute to resource objects

    Added request_ids attribute to resource object for all the
    cgsnapshots, consistencygroups, qos_specs, quota_classes,
    quotas and services APIs by updating following APIs:

    cgsnapshots: delete, update
    consistencygroups: delete, update, create
    qos_specs: delete, associate, disassociate, disassociate_all
    quota_classes: update
    quotas: update
    services: enable, disable, disable_log_reason

    These changes are required to return 'request_id' from client to
    log request_id mappings of cross projects.

    For more details on how request_id will be returned to the caller,
    please refer to the approved blueprint [1] discussed with the
    cross-project team.
    [1] http://specs.openstack.org/openstack/openstack-specs/specs/return-request-id.html

    DocImpact
    'request-ids' will be returned as an attribute with response object.
    User can access it using 'res.request_ids' where 'res' is a
    response object.

    Change-Id: I7b399512fcec9ecd31938656deb60e325bb76ad4
    Partial-Implements: blueprint return-request-id-to-caller