os-security-groups API policy is allowed for everyone even policy defaults is admin_or_owner

[Ghanshyam Mann]

os-security-groups server API policy is default to admin_or_owner[1] but API is allowed for everyone.

We can see the test trying with other project context can access the API
- https://review.opendev.org/#/c/716779/

This is because API does not pass the server project_id in policy target
- https://github.com/openstack/nova/blob/7b51647f17c88c7c1ae321c59ab8a98c586d4b67/nova/api/openstack/compute/security_groups.py#L427

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

[1]
- https://github.com/openstack/nova/blob/7b51647f17c88c7c1ae321c59ab8a98c586d4b67/nova/policies/security_groups.py#L27

[Ghanshyam Mann (ghanshyammann)]

fixed in https://review.opendev.org/#/c/716782