Introduce scope_types in multinic policy

Appropriate scope_type for nova case:
- https://specs.openstack.org/openstack/nova-specs/specs/ussuri/approved/policy-defaults-refresh.html#scope

This commit introduce scope_type for multinic policies
as 'system' and 'project'.

Partial implement blueprint policy-defaults-refresh-deprecated-apis

Change-Id: I0ddd4a06413c2e069175a357e9baa2f3c61003cd

Author: Ghanshyam Mann

nova/policies/multinic.py

@@ -23,13 +23,13 @@
 
 multinic_policies = [
     policy.DocumentedRuleDefault(
-        BASE_POLICY_NAME,
-        base.RULE_ADMIN_OR_OWNER,
-        """Add or remove a fixed IP address from a server.
+        name=BASE_POLICY_NAME,
+        check_str=base.RULE_ADMIN_OR_OWNER,
+        description="""Add or remove a fixed IP address from a server.
 
 These APIs are proxy calls to the Network service. These are all
 deprecated.""",
-        [
+        operations=[
             {
                 'method': 'POST',
                 'path': '/servers/{server_id}/action (addFixedIp)'
@@ -38,7 +38,8 @@
                 'method': 'POST',
                 'path': '/servers/{server_id}/action (removeFixedIp)'
             }
-        ]),
+        ],
+        scope_types=['system', 'project']),
 ]