Running `openshift-install cluster destroy` defeats an OpenStack cloud with many Swift objects, if said cloud is low on resources.

In particular, testing the teardown of an OCP cluster with 500.000 objects in the image registry caused RabbitMQ to crash on a standalone (single-host) OpenStack deployment backed with NVMe storage.

on a constrained (single-host) OpenStack cloud, with the default limit of 10000 to the bulk-deletion of Swift objects.

1. install OpenShift
2. upload 500000 arbitrary objects in the image-registry container
3. launch cluster teardown
4. enjoy Swift responding 504 errors, and the rest of the cluster to become unstable