compass-adapters/chef/cookbooks/compass-rally/files/default/scenarios/quotas/cinder-update.json

{
    "Quotas.cinder_update": [
        {
            "args": {
                "max_quota": 1024
            },
            "runner": {
                "type": "constant",
                "times": 1,
                "concurrency": 1
            },
            "context": {
                "users": {
                    "tenants": 1,
                    "users_per_tenant": 2
                }
            }
        }
    ]
}