Comment 2 for bug 1775309

Steps taken:

1) Installed undercloud
2) Imported baremetal hosts.
3) Started introspection
4) Keystone service taken down before introspection completed (introspection eventually failed)
5) Keystone service brought back up
6) Started introspection, introspection succeeds
7) Deployed baremetal hosts with Ironic
8) Left system for 3 days, Mistral DB and logs continued to fill up disk