havana: nova Add force_nodes to scheduler hints

[Tom Fifield]

https://review.openstack.org/#/c/27824/ adds a new feature to nova:

    Add support for "force_nodes" to scheduler hints, following the example
    of force_hosts. In doing so, fix an issue where the presence of either
    force_hosts or ignore_hosts would have squashed a host with multiple nodes.

    A node can be passed to the scheduler by setting it via --availability_zone
    option, separated from the hostname with a comma. Eg,
      nova boot --availability_zone=zone:host,node
    Note that "host" is optional here, and "zone:,node" also works.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/46632

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/46632
Committed: http://github.com/openstack/openstack-manuals/commit/1c436931a9b34a7aada868a991552c809b855a02
Submitter: Jenkins
Branch: master

commit 1c436931a9b34a7aada868a991552c809b855a02
Author: annegentle <email address hidden>
Date: Fri Sep 13 13:59:45 2013 -0500

    Enhances and updates bare metal information

    Adds back in the section about booting to a specific node/host

    - points to correct wiki page
    - gives more use cases and context

    Change-Id: I71a85860108a4e7220a69c3e54b467dfc575f8c3
    Closes-bug: 1226511
    Closes-bug: 1188474