reboot from non-running in kvm doesn't work

[Vish Ishaya]

From an ml post:
<snip>
Now how to start the vms. In Daiblo, I always just using "nova reboot", it works.But in essex version, it seems cannot use "nova reboot" in an inactive domain. I see there is "nova host-action" command, but it not always make vm start.
</snip>

the reboot will fail if the domain state is in shutdown or shutoff. It needs to be smarter and attempt to start the domain in all cases.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/5177

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/5177
Committed: http://github.com/openstack/nova/commit/dc68e51c51b9d423601f6c1bfd627716df1e66bd
Submitter: Jenkins
Branch: master

commit dc68e51c51b9d423601f6c1bfd627716df1e66bd
Author: Vishvananda Ishaya <email address hidden>
Date: Fri Mar 9 15:45:49 2012 -0800

    Allow soft_reboot to work from more states:

     * update sync_power_states to update other states
     * only attempt to shutdown the domain if it is running
     * attempt to start the domain from shutoff and crashed
     * fixes bug 951235

    Change-Id: Icaa071ac59700385d9985315b99c0468415e444a