This change adds the capability for the ironic-conductor
and standalone service process to transmit timer and counter
metrics to the message bus notifier which may be consumed by
a ceilometer, ironic-prometheus-exporter, or other consumer of
metrics event data on to the message bus.
This functionality is not presently supported on dedicated API
services such as those running as an ``ironic-api`` application
process, or Ironic WSGI application. This is due to the lack of
an internal trigger mechanism to transmit the data in a metrics
update to the message bus and/or notifier plugin.
This change requires ironic-lib 5.4.0 to collect and ship metrics via
the message bus.
Depends-On: https://review.opendev.org/c/openstack/ironic-lib/+/865311
Change-Id: If6941f970241a22d96e06d88365f76edc4683364
82b8ec7a39