GET limits API policy is allowed for everyone but policy defaults is admin_or_owner

[Ghanshyam Mann]

limits API policy is allowed for everyone but policy is default to admin_or_owner[1].

This is because API does not pass the project_id in policy target so that oslo policy can decide the ownership.
https://github.com/openstack/nova/blob/403fc671a6877889d6fb70360e002d9b22b98fc9/nova/api/openstack/compute/limits.py#L77

and if no target is passed then, policy.py add the default targets which is nothing but context.project_id (allow for everyone try to access)
- https://github.com/openstack/nova/blob/c16315165ce307c605cf4b608b2df3aa06f46982/nova/policy.py#L191

There is no owner things in limits and every projects can get its own limits. We need to make default to RULE_ANY which means allowed to everyone.

[1]
- https://github.com/openstack/nova/blob/403fc671a6877889d6fb70360e002d9b22b98fc9/nova/policies/limits.py#L27

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/715672

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/715672
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=4d37ffc111ae8bb43bd33fe995bc3686b065131b
Submitter: Zuul
Branch: master

commit 4d37ffc111ae8bb43bd33fe995bc3686b065131b
Author: Ghanshyam Mann <email address hidden>
Date: Sat Mar 28 21:35:59 2020 -0500

    Correct limits policy check_str

    limits API policy is default to admin_or_owner[1]
    but API is allowed (which is expected) for everyone.

    This is because API does not pass the project_id in policy
    target so that oslo policy can decide the ownership[2]. If no
    target is passed then, policy.py add the default targets which
    is nothing but context.project_id (allow for everyone try to access)
    - https://github.com/openstack/nova/blob/c16315165ce307c605cf4b608b2df3aa06f46982/nova/policy.py#L191

    There is no owner things in limits and every projects can get
    its own limits. We need to make default to RULE_ANY which means
    allowed to everyone.

    [1] https://github.com/openstack/nova/blob/403fc671a6877889d6fb70360e002d9b22b98fc9/nova/policies/limits.py#L27
    Closes-bug: #1869543

    Change-Id: I80617e57a6e062e6038e1b3447e116a5f9e23d24