caddy: add bind to a specific ip

Add binding to a specific ip. 
Add error log. 

@rafael @gabriel 

/reviewed-on !256

stack/caddy/Caddyfile.in

@@ -10,6 +10,8 @@ tls {{ custom_cert_dict['cert-file'] }} {{ custom_cert_dict['key-file'] }} {
 
 log {{caddy_configuration_dict['access_log']}}
 
+errors {{caddy_configuration_dict['error_log']}}
+
 root {{ directory_dict['public_html'] }}
 
 {% if parameter_dict['enable-basic-auth'] == 'true'  -%}
@@ -18,6 +20,8 @@ basicauth / {{ parameter_dict['username'] }} {{parameter_dict['password']}}
 
 }
 
+bind {{caddy_configuration_dict['ipv6']}}
+
 {%- endif %}
 
 [{{caddy_configuration_dict['ipv6']}}]:{{parameter_dict['port-ipv6']}} {
@@ -29,23 +33,31 @@ basicauth / {{ parameter_dict['username'] }} {{parameter_dict['password']}}
   }
 
   log {{caddy_configuration_dict['access_log']}}
+  
+  errors {{caddy_configuration_dict['error_log']}}
 
   root {{ directory_dict['public_html'] }}
 
   {% if parameter_dict['enable-basic-auth'] == 'true'  -%}
   basicauth / {{ parameter_dict['username'] }} {{parameter_dict['password']}}
   {%- endif %}
+  
+  bind {{caddy_configuration_dict['ipv6']}}
 
 }
 
 [{{caddy_configuration_dict['local_ip']}}]:{{parameter_dict['port-ipv4']}} {
 
   log {{caddy_configuration_dict['access_log']}}
+  
+  errors {{caddy_configuration_dict['error_log']}}
 
   root {{ directory_dict['public_html'] }}
 
   {% if parameter_dict['enable-basic-auth'] == 'true'  -%}
   basicauth / {{ parameter_dict['username'] }} {{parameter_dict['password']}}
   {%- endif %}
+  
+  bind {{caddy_configuration_dict['local_ip']}}
 
 }
\ No newline at end of file

stack/caddy/buildout.cfg

@@ -27,7 +27,7 @@ mode = 0644
 [template-caddyfile]
 recipe = slapos.recipe.build:download
 url = ${:_profile_base_location_}/Caddyfile.in
-#md5sum = bb3b314ebeb58e9875d547a053a9f268
+md5sum = 88c4c33e374ea3f61cdd36b2816d24ba
 filename = Caddyfile.in
 location = ${buildout:parts-directory}/${:_buildout_section_name_}
 mode = 0644