create molecule scenario for monitoring role

roles/shared-handlers/handlers/main.yml

@@ -0,0 +1,2 @@
+- name: reload nginx
+  include_tasks: ../handlers/nginx.yml

roles/shared-handlers/handlers/nginx.yml

@@ -0,0 +1,7 @@
+- name: Validate Nginx config
+  command: nginx -t
+
+- name: Reload Nginx server
+  service:
+    name: nginx
+    state: reloaded