Update compute instance-usage and agents tests to adopt new policies

Nova is moving to new policy defaults in ussuri[1] where
few polciies are made more granular to adopt the new defaults.

With granularity in few policies make change in policy name so
we have update the patrole tests to start checking against the
new policy names from ussuri onwards.

This commit updates the os-instance-usage-audit-log and os-agents tests
to move to new policies from ussuri onwards.

[1] https://specs.openstack.org/openstack/nova-specs/specs/ussuri/approved/policy-defaults-refresh.html

Change-Id: I9eb2964c0ffb7022d52fc94c97bbd25c76b6d6d8
diff --git a/releasenotes/notes/adopt_nova_new_policies-c61d1c3751ff1bf9.yaml b/releasenotes/notes/adopt_nova_new_policies-c61d1c3751ff1bf9.yaml
index cb3d047..48cdc08 100644
--- a/releasenotes/notes/adopt_nova_new_policies-c61d1c3751ff1bf9.yaml
+++ b/releasenotes/notes/adopt_nova_new_policies-c61d1c3751ff1bf9.yaml
@@ -10,3 +10,5 @@
       - os_compute_api:os-services
       - os_compute_api:deferred_delete
       - os_compute_api:os-attach-interfaces
+      - os_compute_api:os-instance-usage-audit-log
+      - os_compute_api:os-agents