use a socket timeout in get_auth

[John Dickinson]

As a follow up to https://review.openstack.org/#/c/168673/ we need to add the socket-level timeout to get_auth as well

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/178258

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/177047
Committed: https://git.openstack.org/cgit/openstack/python-swiftclient/commit/?id=e2f41a6635618157c8cd8c3db88ec511490d3876
Submitter: Jenkins
Branch: master

commit e2f41a6635618157c8cd8c3db88ec511490d3876
Author: Pete Zaitcev <email address hidden>
Date: Sun Apr 26 01:37:15 2015 -0600

    Use a socket timeout in get_auth

    A previous change added socket timeouts, but they weren't plumbed
    through to the get_auth code path. Make sure we're passing them along
    everywhere.

    Original-Author: Monty Taylor <email address hidden>
    Change-Id: I398241898248e66d1f8c436c8ed2ec7a0e9387f6
    Closes-bug: 1447847

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/178258
Committed: https://git.openstack.org/cgit/openstack/python-swiftclient/commit/?id=a39e18ff5ac5d8705baef4328ea8433583f8d656
Submitter: Jenkins
Branch: master

commit a39e18ff5ac5d8705baef4328ea8433583f8d656
Author: Alistair Coles <email address hidden>
Date: Tue Apr 28 16:56:44 2015 +0100

    Add test for timeout being passed to keystone client

    Extends existing unit test for timeout being passed to get_auth
    to cover v2.0 auth when keystone client should get the timeout
    kwarg.

    Related-Bug: 1447847
    Change-Id: Ie9cfc86fa2156b94b45d290ac12e3f71b20d6c4f