Comment 7 for bug 1572495

Reviewed: https://review.openstack.org/309601
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=9b2329d10021a7fa5f43b9fd8be3c833dd7212d0
Submitter: Jenkins
Branch: master

commit 9b2329d10021a7fa5f43b9fd8be3c833dd7212d0
Author: Dan Smith <email address hidden>
Date: Fri Apr 22 14:22:08 2016 -0700

    Fail to start nova-api if no APIs were able to be started

    This helps to make it clear that either you specified no API services,
    or you specified all bad ones, or that you fat-fingered the thing
    entirely. If we can't start any, we shouldn't start the process acting
    like we did and then wait for you to figure out the hard way that we
    aren't actually listening for any requests.

    Change-Id: I864486a58cf3fde35647ae3b8d2ad917c809ea54
    Related-Bug: #1572495