d4science-ghn-cluster: new pgpool hosts.

library/roles/grafana: move the role out of the tick directory.
infrastructure-services: fix the virtualhosts for letsencrypt.

grafana/tasks/main.yml

@@ -1,19 +1,19 @@
 ---
 - name: Install the grafana repo key
   apt_key: url={{ grafana_repo_key }} state=present
-  tags: [ 'grafana', 'tick' ]
+  tags: [ 'grafana' ]
 
 - name: Install the grafana deb repository
   apt_repository: repo='{{ grafana_repo }}' state=present update_cache=yes
-  tags: [ 'grafana', 'tick' ]
+  tags: [ 'grafana' ]
 
 - name: Install the grafana deb packages
   apt: name='{{ item }}' state=present
   with_items: '{{ grafana_packages }}'
-  tags: [ 'grafana', 'tick' ]
+  tags: [ 'grafana' ]
   
 - name: Ensure that grafana is enabled and running
   service: name=grafana-server state=started enabled=yes
   when: grafana_enabled
-  tags: [ 'grafana', 'tick' ]
+  tags: [ 'grafana' ]