OPS-1278 Create role to install MySQL locally that is not experimental

playbooks/roles/mysql/meta/main.yml

 ---
 dependencies:
-  - common
+  - common_vars

playbooks/roles/mysql/tasks/main.yml

 ---
-- name: Add MySQL community apt key
-  apt_key:
-    id: 8C718D3B5072E1F5
-    keyserver: "{{ COMMON_EDX_PPA_KEY_SERVER }}"
-    state: present
+- name: Look for mysql 5.6
+  shell: dpkg -L mysql-server-5.6
+  ignore_errors: yes
+  register: mysql_56_installed
  
-- name: Install MySQL community apt repositories
-  apt_repository:
-    repo: "{{ item }}"
-    update_cache: yes
-  with_items:
-    - "deb http://repo.mysql.com/apt/ubuntu/ precise mysql-5.6"
-    - "deb-src http://repo.mysql.com/apt/ubuntu/ precise mysql-5.6"
-
-- name: Install mysql-5.6 and dependencies
-  apt: 
-    name: "{{ item }}" 
-    install_recommends: yes
-    update_cache: yes
-    state: present
-  with_items: mysql_debian_pkgs
-
-- name: Start mysql
-  service: 
-    name: mysql 
-    state: started
-
-- name: Ensure Anonymous user(s) does not exist
-  mysql_user: 
-    name: '' 
-    host: "{{ item }}" 
-    state: absent
-  with_items:
-    - localhost
-    - "{{ ansible_hostname }}"
+- include: mysql.yml
+  when: mysql_56_installed.rc == 1
\ No newline at end of file

playbooks/roles/mysql/tasks/mysql.yml

+---
+- name: Add MySQL community apt key
+  apt_key:
+    id: 8C718D3B5072E1F5
+    keyserver: "{{ COMMON_EDX_PPA_KEY_SERVER }}"
+    state: present
+
+- name: Install MySQL community apt repositories
+  apt_repository:
+    repo: "{{ item }}"
+    update_cache: yes
+  with_items:
+    - "deb http://repo.mysql.com/apt/ubuntu/ precise mysql-5.6"
+    - "deb-src http://repo.mysql.com/apt/ubuntu/ precise mysql-5.6"
+
+- name: Install mysql-5.6 and dependencies
+  apt: 
+    name: "{{ item }}" 
+    install_recommends: yes
+    update_cache: yes
+    state: present
+  with_items: mysql_debian_pkgs
+
+- name: Start mysql
+  service: 
+    name: mysql 
+    state: started
+
+- name: Ensure Anonymous user(s) does not exist
+  mysql_user: 
+    name: '' 
+    host: "{{ item }}" 
+    state: absent
+  with_items:
+    - localhost
+    - "{{ ansible_hostname }}"