grafana: Change the repository URL. Fix the apt: tasks.

library/roles/grafana/defaults/main.yml

@@ -1,6 +1,6 @@
 ---
-grafana_repo_key: https://packagecloud.io/gpg.key
-grafana_repo: 'deb https://packagecloud.io/grafana/testing/debian/ wheezy main'
+grafana_repo_key: https://packages.grafana.com/gpg.key 
+grafana_repo: 'deb https://packages.grafana.com/oss/deb stable main'
 grafana_pkg_state: latest
 grafana_packages:
   - grafana

library/roles/grafana/tasks/main.yml

@@ -4,8 +4,7 @@
       service: name=grafana-server state=stopped enabled=no
 
     - name: Remove the grafana deb packages
-      apt: name='{{ item }}' state=absent
-      with_items: '{{ grafana_packages }}'
+      apt: name={{ grafana_packages }} state=absent
 
     - name: Install the grafana deb repository
       apt_repository: repo='{{ grafana_repo }}' state=absent update_cache=yes
@@ -21,8 +20,7 @@
       apt_repository: repo='{{ grafana_repo }}' state=present update_cache=yes
 
     - name: Install the grafana deb packages
-      apt: name='{{ item }}' state={{ grafana_pkg_state }} update_cache=yes cache_valid_time=1800
-      with_items: '{{ grafana_packages }}'
+      apt: name={{ grafana_packages }} state={{ grafana_pkg_state }} update_cache=yes cache_valid_time=1800
   
     - name: Install the grafana configuration files
       template: src={{ item }}.j2 dest=/etc/grafana/{{ item }} mode=0440 owner=root group=grafana