Live Migration can set new host to the current host.

[Zhenguo Niu]

When migrating a server, current host should not contain in the new host list.

    def populate_host_choices(self, request, initial):
        hosts = initial.get('hosts')
        current_host = initial.get('current_host')
        host_list = [(host.hypervisor_hostname,
                      host.hypervisor_hostname)
                     for host in hosts
                     if host.hypervisor_hostname != current_host] //// we should not use hypervisor_hostname compare with current_host, they can be different on the same host.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/65892

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65892
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=06e11327349b0e1a904ed67dacd63e98528d7ba9
Submitter: Jenkins
Branch: master

commit 06e11327349b0e1a904ed67dacd63e98528d7ba9
Author: Zhenguo Niu <email address hidden>
Date: Fri Jan 10 16:18:23 2014 +0800

    Live Migration should not contain current host in the new host list

    Change-Id: I30af5aa4943284edc16dfbde1b1354951698c77c
    Closes-Bug: #1267733