added a valid map for tf2

de_dust2 is a CS map not a tf2 map, after fresh install server do not work because of this

TeamFortress2/tf2server

@@ -17,7 +17,7 @@ steamuser="anonymous"
 steampass=""
 
 # Start Variables
-defaultmap="de_dust2"
+defaultmap="cp_badlands"
 maxplayers="16"
 tickrate="64"
 port="27015"
@@ -843,4 +843,4 @@ case "$1" in
 	echo "Usage: $0 {start|stop|restart|update|update-restart|validate|validate-restart|monitor|email-test|details|backup|console|debug|install}"
 	exit 1;;
 esac
-exit
+exit