Comment 4 for bug 1438189

Reviewed: https://review.openstack.org/168907
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=20a22adc3cb97b6da5c9e1e72171688af3a75e50
Submitter: Jenkins
Branch: master

commit 20a22adc3cb97b6da5c9e1e72171688af3a75e50
Author: Hans Lindgren <email address hidden>
Date: Mon Mar 30 13:53:17 2015 +0200

    Don't query compute_node through service object in nova-manage

    The relationship between compute_node and service tables was
    removed in a recent commit and to be able to remove compat code in
    the objects, calls to get them should be done directly instead of
    going through one or the other.

    Since we are really just interested in the compute_node object here
    this in addition saves us one extra db call.

    Change-Id: I5270882321f7d16f993746498f751f17b0cb52fd
    Related-Bug: #1438189