manila/etc/manila/policy.json

{
    "availability_zone:index": "rule:default",

    "scheduler_stats:pools:index": "rule:admin_api",
    "scheduler_stats:pools:detail": "rule:admin_api",

    "message:delete": "rule:default",
    "message:get": "rule:default",
    "message:get_all": "rule:default"
}