Merge pull request #115 from johngian/fix-mysql-grafana

Use random root password for grafana-mysql.

roles/grafana/tasks/main.yml

@@ -49,6 +49,7 @@
       MYSQL_DATABASE: "grafana"
       MYSQL_USER: "{{ grafana_mysql_user }}"
       MYSQL_PASSWORD: "{{ grafana_mysql_password }}"
+      MYSQL_RANDOM_ROOT_PASSWORD: "yes"
     restart_policy: always
   tags:
     - grafana