Merge "ironic: mount metrics in conductor only when exporter is enabled"

ansible/roles/ironic/defaults/main.yml

@@ -234,7 +234,7 @@ ironic_conductor_default_volumes:
   - "kolla_logs:/var/log/kolla"
   - "ironic:/var/lib/ironic"
   - "{{ kolla_dev_repos_directory ~ '/ironic/ironic:/var/lib/kolla/venv/lib/python' ~ distro_python_version ~ '/site-packages/ironic' if ironic_dev_mode | bool else '' }}"
-  - "ironic_prometheus_exporter_data:/var/lib/ironic/metrics"
+  - "{{ 'ironic_prometheus_exporter_data:/var/lib/ironic/metrics' if enable_ironic_prometheus_exporter | bool else '' }}"
 ironic_tftp_default_volumes:
   - "{{ node_config_directory }}/ironic-tftp/:{{ container_config_directory }}/:ro"
   - "/etc/localtime:/etc/localtime:ro"