user get different interface to get request_ids

[Cao ShuFeng]

This change expose x-openstack-request-id to users.
https://review.openstack.org/#/c/261399

However, for different action, user can't get a coherent interface to get x-openstack-request-id.

For example:
for a stop action:
         result = manager.stop(server)
         request_id = result[1].request_ids

for a delete action:
        result = manager.delete(server)
        request_id = result.request_ids

The difference will make user inconvenient.

We should provide user with coherent interface to get request_ids.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/276639

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/276639
Committed: https://git.openstack.org/cgit/openstack/python-novaclient/commit/?id=f535e6945b64509e2b9a1298fc502697691aa595
Submitter: Jenkins
Branch: master

commit f535e6945b64509e2b9a1298fc502697691aa595
Author: Cao Shufeng <email address hidden>
Date: Fri Feb 5 16:59:21 2016 +0800

    Provide user with coherent interface to get request_ids

    Currently, users must use different interface to get request_ids.
    1. Commonly, ListWithMeta, DictWithMeta or TupleWithMeta, etc is
    returned to user. And request_ids is returned as an attribute of
    *WithMeta.

        For a server delete action:
            result = serverManager.delete(server)
            # result = TupelWithMeta
            request_ids = result.request_ids

    2. Some places reutrn a tuple which contains request_ids in one of
    its elements.

        For a server stop action:
            result = serverManager.stop(server)
            # result = (Response, TupleWithMeta)
            request_ids = result[1].request_ids

    Such kind of difference makes user confused.
    This change provides a backwards compatibility solution for users
    who don't care about request_ids as TupleWithMeta is subclass of
    tuple.

    Change-Id: I164bb95abce6dc96cf455033f02822ccb0d87b8f
    Closes-Bug: 1542179

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/python-novaclient 3.3.0 release.