Comment 6 for bug 1260528

The bug is exposed directly in Icehouse thanks to commit ea447939a88 (harmonising the Keystone version fallback).

It's not immediately visible in Havana because prior to that fix, we had a mix of v2 and v3 calls. To reproduce in Havana, one can set the keystone API version to 2.0 in local_settings.py. (The workaround would then be to run with Keystone v3 and explicitly set the version in the local settings...)