Comment 2 for bug 1093172

Reviewed: https://review.openstack.org/18581
Committed: http://github.com/openstack/python-novaclient/commit/4cf314b2ecb1d6138b925d0b3f96cea9646cd022
Submitter: Jenkins
Branch: master

commit 4cf314b2ecb1d6138b925d0b3f96cea9646cd022
Author: Ken'ichi Ohmichi <email address hidden>
Date: Sun Dec 23 04:51:56 2012 +0900

    Fix some usage messages of 'nova volume-*'

    'nova volume-show', 'nova volume-delete', 'nova volume-snapshot-show'
    and 'nova volume-snapshot-delete' can be specified by ID or name as
    the argument.
    But that is not described on the usage messages.
    This patch fixes the usage messages.

    Fixes bug 1093172

    Change-Id: I3dcdd2aca923e9304efd9ea7b467d5b81cd642a7