update ansible mysql deps

sails/roles/mysql/tasks/main.yml

@@ -16,17 +16,11 @@
     name: "{{ item }}"
     state: present
   with_items:
-    - mysql-server-5.7
+    - mysql-server
     - mysql-client
     - python-mysqldb # required by ansible
   when: ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu'
 
-- name: Add MySQL community repository
-  yum:
-    name: "http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm"
-    state: present
-  when: ansible_distribution == 'CentOS' and ansible_distribution_major_version == '7'
-
 - name: Install mysql packages
   yum:
     name: "{{ item }}"