Added missing logdir start parameter for Natural Selection 2 so the game is able to save various logs

NaturalSelection2/ns2server

@@ -48,7 +48,7 @@ password=""
 
 # http://wiki.unknownworlds.com/ns2/Dedicated_Server
 fn_parms(){
-parms="-name \"${servername}\" -port ${port} -webadmin -webdomain ${ip} -webuser ${webadminuser} -webpassword \"${webadminpass}\" -webport ${webadminport} -map ${defaultmap} -limit ${maxplayers} -config_path \"${servercfgdir}\" -modstorage \"${modstoragedir}\" -mods \"${mods}\""
+parms="-name \"${servername}\" -port ${port} -webadmin -webdomain ${ip} -webuser ${webadminuser} -webpassword \"${webadminpass}\" -webport ${webadminport} -map ${defaultmap} -limit ${maxplayers} -config_path \"${servercfgdir}\" -logdir \"${gamelogdir}\" -modstorage \"${modstoragedir}\" -mods \"${mods}\""
 }
 
 #### Advanced Variables ####