[prometheus] Restart nginx before prometheus-nginx-exporter

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

roles/prometheus-nginx-exporter/handlers/main.yml

 ---
-- name: Restart prometheus-nginx-exporter
+- name: Restart nginx
   service:
-    name: prometheus-nginx-exporter
+    name: nginx
     state: restarted
 
-- name: Restart nginx
+- name: Restart prometheus-nginx-exporter
   service:
-    name: nginx
+    name: prometheus-nginx-exporter
     state: restarted

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

@@ -13,7 +13,9 @@
     regexp: '^ARGS='
     line: |
       ARGS="-web.listen-address={{ adm_ipv4 }}:9117"
-  notify: Restart prometheus-nginx-exporter
+  notify:
+    - Restart nginx
+    - Restart prometheus-nginx-exporter
 
 - name: Configure nginx
   template: