Enable Octavia API audit logging for API jobs

This patch enables the Octavia API CADF auditing in logging mode on
the tempest API jobs.

Depends-On: https://review.openstack.org/#/c/609854
Change-Id: I3b9bc297a6a6ba920c3b3670a430dcfe98eca666
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 15147fa..691dfba 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -97,6 +97,10 @@
           $OCTAVIA_CONF:
             api_settings:
               api_v1_enabled: False
+            audit:
+              enabled: True
+            audit_middleware_notifications:
+              driver: log
       tempest_concurrency: 2
       tempest_test_regex: ^octavia_tempest_plugin.tests.api.v2
       tox_envlist: all