non-ASCII volume display name breaks 'cinder show'

[Flavio Percoco]

After creating a volume with a display name that includes non-ASCII characters, you can not get the details of the volume by name using 'cinder show'.

More details here: https://bugzilla.redhat.com/show_bug.cgi?id=888952

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/23089

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/23089
Committed: http://github.com/openstack/python-cinderclient/commit/03a4806d972ac150e717451566e9c4c35a141d8f
Submitter: Jenkins
Branch: master

commit 03a4806d972ac150e717451566e9c4c35a141d8f
Author: Flaper Fesp <email address hidden>
Date: Wed Feb 27 14:47:44 2013 +0100

    Decodes input and encodes output

    Currently cinderclient doesn't handle properly incoming and outgoing
    encode / decode process. As a solution for this, this patch implements a
    decoding process for all data incoming from the user side and encodes
    everything going out of the client, i.e: http requests, prints, etc.

    This patch introduces a new module (strutils.py) taken from
    oslo-incubator in order to use 2 of the functions present in it:

    About safe_(decode|encode):

        Both functions try to encode / decode the incoming text using the
        stdin encoding, fallback to python's default encoding if that
        returns None or to UTF-8 as the last option.

        In both functions only basestring objects are accepted and they both
        raise TypeError if an object of another type is passed.

    About the general cinderclient changes:

        In order to better support non-ASCII characters, it is a good
        practice to use unicode interanlly and encode everything that has to
        go out. This patch aims to do that and introduces this behaviour in
        the client.

    Testing:

        A good test (besides using tox) is to use cinder client with and
        without setting any locale (export LANG=).

    Fixes bug: 1130572

    Change-Id: Idb7d06954c29e003f68a0c4aa0b80ecc7017cbc9