caddy-frontend: Expose node id in the statistic

Otherwise it's almost impossible to check for which node statistics are shown.

software/caddy-frontend/buildout.hash.cfg

@@ -22,7 +22,7 @@ md5sum = 5784bea3bd608913769ff9a8afcccb68
 
 [profile-caddy-frontend]
 filename = instance-apache-frontend.cfg.in
-md5sum = a03bb86d7e49960815a000adf7c19f77
+md5sum = e8db3179e3278c6390a786cdcc947173
 
 [profile-caddy-replicate]
 filename = instance-apache-replicate.cfg.in

software/caddy-frontend/instance-apache-frontend.cfg.in

@@ -711,7 +711,7 @@ statistic-certificate = ${self-signed-ip-access:certificate}
 statistic-port = ${configuration:backend-haproxy-statistic-port}
 statistic-username = ${monitor-instance-parameter:username}
 statistic-password = ${monitor-htpasswd:passwd}
-statistic-identification = {{ slapparameter_dict['cluster-identification'] }}
+statistic-identification = {{ instance_parameter_dict['configuration.frontend-name'] + ' @ ' + slapparameter_dict['cluster-identification'] }}
 statistic-frontend-secure_access = ${backend-haproxy-statistic-frontend:connection-secure_access}
 
 [backend-haproxy]