update ansible mysql deps

sails/roles/mysql/tasks/main.yml

 ---
 
-- name: Install MySQL repos
-  apt:
-    deb: http://dev.mysql.com/get/mysql-apt-config_0.7.3-1_all.deb
-    state: present
-  when: ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu'
-
 - name: Update apt-get cache
   apt:
     update-cache: yes