Merge branch 'fix-node-exporter-firewall-restart-condition' into 'feat-hpc-factory'

fix: restart firewalld only when it was running

See merge request !188

ansible/roles/install_node_exporter/tasks/main.yaml

@@ -77,3 +77,6 @@
     name: firewalld
     enabled: true
     state: restarted
+  when:
+    - "'firewalld.service' in ansible_facts.services"
+    - ansible_facts.services["firewalld.service"].state == "running"