apache-frontend: fix ipv6

apache-frontend: remove unecessary sslengine in http

software/apache-frontend/apache.conf.in

@@ -7,7 +7,7 @@ ServerName {{ domain }}
 DocumentRoot {{ document_root }}
 ServerRoot {{ instance_home }}
 
-{% for ip in (ipv4_addr, ipv6_addr) -%}
+{% for ip in (ipv4_addr, "[%s]" % ipv6_addr) -%}
 {%   for port in (http_port, https_port) -%}
 {{ "Listen %s:%s" % (ip, port)  }}
 {%   endfor -%}

software/apache-frontend/default-virtualhost.conf.in

@@ -47,7 +47,6 @@
 <VirtualHost *:{{ http_port }}>
   ServerName {{ slave_parameter.get('domain') }}
   ServerAlias {{ slave_parameter.get('domain') }}
-  SSLEngine on
   SSLProxyEngine on
   # Rewrite part
   ProxyVia On