Fix server.cfg not being executed on map change by default.

This fixes an issue with server getting lockdown after a private match was played.

valve/startup_server.cfg

@@ -24,3 +24,6 @@ mp_welcomecam 				1 	// Player is put in semi-spectator mode instead of spawn on
 mp_notify_player_status 	3 	// Only show player join and leave notify messages.
 spectator_cmd_delay 		1 	// Keep this value low to avoid any issues
 mp_respawn_fix				0   // Turn it on in case you want the respawn be consistent in all FPS
+
+// This will allow restart sv_password on map change
+mapchangecfgfile server.cfg