Comment 11 for bug 1695634

To summarize the problem:

(10:58:09 AM) mriedem: so we start placement-api 32 seconds after we start nova-compute,
(10:58:23 AM) mriedem: nova-compute starts up and tries to register the compute node with placement but gets a 503 b/c placement isn't up yet,
(10:58:34 AM) mriedem: meanwhile, the compute host is mapped to the cell and tests start,
(10:59:01 AM) mriedem: test tries to create a server, scheduler asks placement for a resource provider (compute node) for the server, there are 0 because none are registered, and the server create fails,
(10:59:20 AM) mriedem: 15 seconds later, n-cpu registers the compute node with placement during it's periodic task to update avialable resources (1 minute cron)