fixup! slaprunner: fix 401 http errors when no account exist

Redirect in nginx does not behave the same depending on wether it is
accessed directly or behind apache proxy.

software/slaprunner/common.cfg

@@ -102,7 +102,7 @@ mode = 0644
 recipe = hexagonit.recipe.download
 url = ${:_profile_base_location_}/nginx_conf.in
 download-only = true
-md5sum = fac41d8819c17ebca78e4554932b1075
+md5sum = 5bbe62827d232b3bbac3d5eb03e2d648
 filename = nginx_conf.in
 mode = 0644
 

software/slaprunner/nginx_conf.in

@@ -36,6 +36,17 @@ http {
         location / {
             # When no .htpasswd exist, redirect the user to account creation page
             if ( !-f {{ param_nginx_frontend['etc_dir'] }}/.htpasswd ) {
+                # redirect URL is different wether nginx is accessed directly or behind apache.
+                # nginx does not support nested if or multiple conditions, so we use this well known hack.
+                set $test no_htpasswd;
+            }
+            if ( $host = [{{ param_nginx_frontend['global-ip'] }}] ) {
+                set $test "${test}_backend_access";
+            }
+            if ( $test = no_htpasswd) {
+                return 301 $scheme://$host/setAccount ;
+            }
+            if ( $test = no_htpasswd_backend_access) {
                 return 301 /setAccount ;
             }
             auth_basic "Restricted";