software/backupserver: Follow up nginx upgrade

Since nginx 1.25.1 ssl directive has been dropped, so fix the configuration
template to work with 1.25.2.

software/backupserver/buildout.hash.cfg

@@ -18,7 +18,7 @@ md5sum = 458870b70c33a1621b68961ae2372ad5
 
 [template-nginx-configuration]
 filename = template-nginx.cfg.in
-md5sum = fc4f258e3ae56e0c9596484d736ccfed
+md5sum = 3edea04f8e7c79f3363b7a849ae6c7eb
 
 [template-dcron-service]
 filename = template-dcron-service.sh.in

software/backupserver/template-nginx.cfg.in

@@ -51,9 +51,8 @@ http {
   gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;
 
 server {
-  listen [$${nginx-configuration:ip}]:$${nginx-configuration:port};
+  listen [$${nginx-configuration:ip}]:$${nginx-configuration:port} ssl;
 
-  ssl                 on;
   ssl_certificate $${nginx-configuration:ssl_crt};
   ssl_certificate_key $${nginx-configuration:ssl_key};