title: ProxySQL SSL backend configuration from the config file
body: <p>Using proxysql 2.0.8 (docker severalnines/proxysql:2.0.8) and I was struggling to configure the SSL for backend servers (hosted as managed cloud instances).</p>
  
  <p>At the end - it works while issueing following SQL statements in the admin interface:</p>
  
  <pre><code>UPDATE mysql_servers SET use_ssl=1;
  LOAD MYSQL SERVERS TO RUNTIME;
  </code></pre>
  
  <p>Is there a way to configure the <code>use_ssl</code>parameter using the <code>/etc/proxysql.cfg</code> file? </p>