Display stack_owner on stack-list

[andersonvom]

The stack owner information is always displayed on the API due to this change: https://review.openstack.org/#/c/101657/

It should also be displayed in the heat client as well.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/116046

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/116046
Committed: https://git.openstack.org/cgit/openstack/python-heatclient/commit/?id=c29f12a2a8f251573e537684c0b395d3039bbe9a
Submitter: Jenkins
Branch: master

commit c29f12a2a8f251573e537684c0b395d3039bbe9a
Author: Anderson Mesquita <email address hidden>
Date: Thu Aug 21 10:46:15 2014 -0700

    Display stack owner info on stack-list

    When listing stacks using the --global-tenant flag, the user is not able
    to tell who each stack belongs to. Furthermore, the problem may also
    happen if there are multiple users within the same project.

    This adds a --show-owner flag to stack-list to display the stack_owner
    information when doing a normal stack list. This flag is also set to
    true when using --global-tenant, including an extra project field as
    well, since the username is not unique across all projects.

    Closes-Bug: #1359898
    Change-Id: Id517be1d147f0b3a72ef7c3f8e4d16c7460477f8