support listing users in a non-default domain scoped group

[Steve Martinelli]

While playing around with non-default ldap, the following failed for me:

$ openstack user list --group "HiPODS-OpenCloud" --domain ibm

The group 404'ed because to find the group, it's evaluated like so:
        if parsed_args.group:
            group = utils.find_resource(
                identity_client.groups,
                parsed_args.group,
            ).id
        else:
            group = None

Note how it doesn't take into account the domain

the work around is to do:
$ openstack user list --group ed9f9cb5dbefd6a6e5808ca97921734da3b90b5d160e0a7308c199680c595a96
+------------------------------------------------------------------+--------------------------------+
| ID | Name |
+------------------------------------------------------------------+--------------------------------+
| c29cac8f7003e6de36a47b85f306f137bea8026e3d55c35aed27dfbf09c8fb28 | <email address hidden> |
| f3ca1de06fbe100e71577aad68ccd588f9d792686ae75812becfe43d5b4aa09c | <email address hidden> |
+------------------------------------------------------------------+--------------------------------+

[Steve Martinelli (stevemar)]

patch is here: https://review.openstack.org/#/c/212977/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/212977
Committed: https://git.openstack.org/cgit/openstack/python-openstackclient/commit/?id=36a9703a192af16d2bad8cc7fec1eba25de8d01b
Submitter: Jenkins
Branch: master

commit 36a9703a192af16d2bad8cc7fec1eba25de8d01b
Author: Steve Martinelli <email address hidden>
Date: Thu Aug 13 21:57:53 2015 -0700

    Support listing users by group name

    Listing users within a group is not presently domain scoped. We
    do not use the domain info at all when the group option is present.
    A new --group-domain option is not needed since we cannot list
    users by --project and --group, they are mutually exclusive (as
    per the identity API).

    Closes-Bug: 1492916
    Change-Id: I50f995ee4a03c2bdb21f2b5722546ab8fe786eb6