
The start method starts extra threads like the apscheduler for sending stats, etc. We don't want any of that running when we are just validating tenants, so move the KeyStorage into the initializer and avoid running start/stop when we are validating tenants. (Tracebacks from periodic stats jobs were observed in long test runs.) Change-Id: I1aebdc3b5e069ab8bf8044de9d1121ae8d9798d7