debuginfod: use restart handler instead of reload

Reloading isn't supported by debuginfod.service.

roles/debuginfod/handlers/main.yml

 ---
 
-- name: reload debuginfod
-  service: name=debuginfod state=reloaded
+- name: daemon reload
+  systemd:
+    daemon-reload: true
+
+- name: restart debuginfod
+  service: name=debuginfod state=restarted

roles/debuginfod/tasks/main.yml

@@ -14,7 +14,8 @@
   vars:
     debuginfod_package_path: "{{ debuginfod_package_paths | join(' ') }}"
   notify:
-    - reload debuginfod
+    - daemon reload
+    - restart debuginfod
 
 - name: create http directory for debuginfod website files
   file: path=/srv/http/debuginfod state=directory owner=root group=root mode=0755