Removes proxysql_version variable

Removes proxysql_version variable.
This implies version 1.4.2+ is used if cluster is set up

README.md

@@ -25,7 +25,6 @@ Tested on 2.2.1.0 but should work on Ansible 1.9+.
 
 | Name                       | Default   | Type   | Description                                                       |
 | -----                      | -------   | ------ | -----------                                                       |
-| proxysql_version           | 1.5.3     | String | ProxySQL version to install                                       |
 | proxysql_admin_user        | admin     | String | Username for ProxySQL admin                                       |
 | proxysql_admin_password    | admin     | String | Password for the above user                                       |
 | proxysql_admin_interface   | 127.0.0.1 | String | Bind address for admin interface                                  |

templates/proxysql.cnf.j2

@@ -22,13 +22,13 @@ admin_variables=
   mysql_ifaces="{{ proxysql_admin_interface }}:{{ proxysql_admin_port }};/tmp/proxysql_admin.sock"
 # refresh_interval=2000
 # debug=true
-{% if proxysql_cluster_name and proxysql_version | version_compare('1.4.2', '>=') %}
+{% if proxysql_cluster_name %}
   cluster_username="{{ proxysql_cluster_name }}"
   cluster_password="{{ proxysql_cluster_password }}"
 {% endif %}
 }
 
-{% if proxysql_cluster_name and proxysql_version | version_compare('1.4.2', '>=') %}
+{% if proxysql_cluster_name %}
 proxysql_servers =
 (
 {% for host in groups[proxysql_cluster_servers_group] %}