'cinder-manage config list' command doesn't allow users to specify a config option to display

[Jay Bryant]

Other cinder-manage xxxxx list commands allow the user to specify a filter to display a subset of information, 'cinder-manage config list' is inconsistent as it doesn't allow the same functionality.

cinder-manage should be updated to allow this.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/33694

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/33694
Committed: http://github.com/openstack/cinder/commit/15bd189235b660890e12d60627e006ea608fb56e
Submitter: Jenkins
Branch: master

commit 15bd189235b660890e12d60627e006ea608fb56e
Author: Jay S. Bryant <email address hidden>
Date: Wed Jun 19 14:52:41 2013 -0500

    Add flag argument to 'cinder-manage config list'

    Unlike other cinder-manage 'list' commands the 'config list'
    option doesn't allow users to specify a filter to limit
    the output. This commit adds the ability to specify
    the flag the user wishes to display.

    If no flag is specified the default behavior is still to
    display all the configured flags. If the flag requested
    is not found, cinder-manage reports that the flag was not
    found.

    (fixes bug 1187137)

    Change-Id: I698f4c06d7e93217d8f307a880e0ae40711151c2