Xen and VMware drivers hit database in poll_rebooting_instances()

[Dan Smith]

The Xen and VMware drivers will hit the database in their poll_rebooting_instances() calls because they call compute_api::reboot(), which does a direct-to-database update.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/35067

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/35067
Committed: http://github.com/openstack/nova/commit/7f0051d4736ae1b464efb6c1edcadbab688bb496
Submitter: Jenkins
Branch: master

commit 7f0051d4736ae1b464efb6c1edcadbab688bb496
Author: Dan Smith <email address hidden>
Date: Sun Jun 30 15:00:58 2013 -0700

    Make compute_api.reboot() use objects

    This makes the compute api's reboot() method use objects and pass
    them to compute/manager.

    The one place we call back from compute/manager to compute/api's
    reboot() is also converted to use objects in this patch. That
    almost makes bug 1196301 go away, but will require instance
    actions work as well.

    This also adds a new cells method for passing the object to reboot in
    the child cell.

    Related to blueprint compute-api-objects

    Change-Id: I7845daa266687b5dc24fc2b1a98f2e5a2841e4bf