fix commento websocket proxy

roles/blog/tasks/commento.yml

   command: a2ensite commento_{{ item }}.conf creates=/etc/apache2/sites-enabled/commento_{{ item }}.conf
   notify: restart apache
   with_items: "{{ virtual_domains | json_query('[*].name') }}"
+
+- name: Enable Apache wstunnel module
+  command: a2enmod proxy_wstunnel creates=/etc/apache2/mods-enabled/proxy_wstunnel.load
+  notify: restart apache

roles/blog/templates/etc_apache2_sites-available_commento.j2

 
     ProxyRequests           On
     ProxyPreserveHost       On
+    ProxyPass               /ws ws://localhost:{{ commento_internal_port }}/ws
+    ProxyPassReverse        /ws ws://localhost:{{ commento_internal_port }}/ws
     ProxyPass               / http://localhost:{{ commento_internal_port }}/
     ProxyPassReverse        / http://localhost:{{ commento_internal_port }}/
 </VirtualHost>