keystone-manage foo bar should return exit status

[Dan Prince]

keystone-manage should display an error message and give an exit status when an invalid command is specified.

It currently does not...

[root@nova1 ~]# keystone-manage foo || echo "It failed"

... prints nothing

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/4394

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/4394
Committed: http://github.com/openstack/keystone/commit/c233b44fbbd0570c95d7da3414cf1de1bb63939d
Submitter: Jenkins
Branch: master

commit c233b44fbbd0570c95d7da3414cf1de1bb63939d
Author: Dan Prince <email address hidden>
Date: Wed Feb 22 09:39:26 2012 -0500

    cli now returns an exit status cmd is invalid.

    Update keystone-manage so that it returns an exit status when
    the specified command is invalid. Also prints out usuage on error.

    Fixes LP Bug #938718.

    Change-Id: I57f1e009e7485912ed7e03c7163ae9dda27def04