Prefer nova over nova-manage for network create and list

[Lorin Hochstein]

The "nova" command-line tool now supports some commands that were previously only accessible using nova-manage:

For example:

nova network-create replaces nova-manage network create
nova network-list replaces nova-manage network list
nova network-show replaces nova-manage network show

Network-related commands supported by nova:

    network-associate-host
                        Associate host with network.
    network-associate-project
                        Associate project with network.
    network-create Create a network.
    network-disassociate
                        Disassociate host and/or project from the given
                        network.
    network-list Print a list of available networks.
    network-show Show details about the given network.

(Note that modify and delete are not listed, so I assume nova-manage is still needed for those).

Docs should be updated accordingly.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/26702

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/26702
Committed: http://github.com/openstack/openstack-manuals/commit/d9eb033fb45b9db97bd3dc591803ca6632d8faf4
Submitter: Jenkins
Branch: master

commit d9eb033fb45b9db97bd3dc591803ca6632d8faf4
Author: Lorin Hochstein <email address hidden>
Date: Wed Apr 10 22:09:40 2013 -0400

    Use nova CLI for network creation

    Prefer the "nova" tool over "nova-manage" for network creation.

    Fixes bug 1167657

    Patchset adds missing <title> element to Creating Custom Images.
    Patchset corrects <productnumber> for <prompt> in Lay of the Land.

    Change-Id: Id5d229f530203f361d71ae2c0cd8385297ee3829