debuginfod: fix reloading of debuginfod service

You can't `systemctl reload debuginfod` after installing the systemd
unit we need a daemon-reload.

roles/debuginfod/handlers/main.yml

-- name: Reload debuginfod
-  service: name=debuginfod state=reloaded
+- name: Daemon reload
+  systemd_service:
+    daemon-reload: true
+

roles/debuginfod/tasks/main.yml

@@ -13,7 +13,7 @@
   vars:
     debuginfod_package_path: "{{ debuginfod_package_paths | join(' ') }}"
   notify:
-    - Reload debuginfod
+    - Daemon reload
 
 - name: Create http directory for debuginfod website files
   file: path=/srv/http/debuginfod state=directory owner=root group=root mode=0755