
This commit adds Keystone audit middleware API logging to the Heat charm in versions Yoga and newer to allow users to configure their environment for CADF compliance. This feature can be enabled/disabled and is set to 'disabled' by default to avoid bloat in log files. The logging output is configured to /var/log/heat/heat-api.log. This commit builds on previous discussions: https://github.com/juju/charm-helpers/pull/808. func-test-pr: https://github.com/openstack-charmers/zaza-openstack-tests/pull/1212 Closes-Bug: 1856555 Change-Id: Ic611b68f35a36489673e3430dd1abbd5aa752fa7