[prometheus-node-exporter] create override directory

roles/prometheus-node-exporter/tasks/main.yml

@@ -27,6 +27,11 @@
       ARGS="--web.listen-address={{ prometheus_node_exporter.listen_addr }}:9100"
   tags: restart-node-exporter
 
+- name: Create /etc/systemd/system/prometheus-node-exporter.service.d/
+  file:
+    path: /etc/systemd/system/prometheus-node-exporter.service.d/
+    state: directory
+
 - name: Patch prometheus-node-exporter service
   template:
     src: systemd/system/prometheus-node-exporter.service.d/override.conf.j2