now we're no longer using hhvm, update nginx to try php7 first

gliders.nginx.conf

@@ -87,20 +87,21 @@ server {
     location ~ ^/(app|app_dev|config)\.php(/|$) {
         fastcgi_pass hhvmfcgi;
         fastcgi_intercept_errors on;
-        error_page 502 = @fallback;
+        # error_page 502 = @fallback;
+        error_page 502 /502.html;
         include fastcgi_params;
         fastcgi_split_path_info ^(.+\.php)(/.*)$;
         fastcgi_param  SCRIPT_FILENAME $symfonyroot/web$fastcgi_script_name;
         fastcgi_param  HTTPS off;
     }
 
-    location @fallback {
-        fastcgi_pass phpfcgi;
-        fastcgi_intercept_errors on;
-        include fastcgi_params;
-        fastcgi_split_path_info ^(.+\.php)(/.*)$;
-        fastcgi_param SCRIPT_FILENAME $symfonyroot/web$fastcgi_script_name;
-        fastcgi_param HTTPS off;
-        error_page 502 /502.html;
-    }
+    # location @fallback {
+    #     fastcgi_pass phpfcgi;
+    #    fastcgi_intercept_errors on;
+    #    include fastcgi_params;
+    #    fastcgi_split_path_info ^(.+\.php)(/.*)$;
+    #    fastcgi_param SCRIPT_FILENAME $symfonyroot/web$fastcgi_script_name;
+    #    fastcgi_param HTTPS off;
+    #    error_page 502 /502.html;
+    #}
 }