Changed L4D1 servercfg

It doesn't support +servercfgdefault, so we have to use the server.cfg.

lgsm/config-default/config-lgsm/l4dserver/_default.cfg

@@ -99,7 +99,7 @@ engine="source"
 systemdir="${serverfiles}/left4dead"
 executabledir="${serverfiles}"
 executable="./srcds_run"
-servercfg="${servicename}.cfg"
+servercfg="server.cfg"
 servercfgdefault="server.cfg"
 servercfgdir="${systemdir}/cfg"
 servercfgfullpath="${servercfgdir}/${servercfg}"