shorten wait time for at run

tmcd/netbsd/rc.testbed

@@ -13,5 +13,5 @@ fi
 /bin/rm -f /var/at/jobs/S*
 if [ -s /etc/testbed/startupcmd  ]; then
         echo "Scheduling startup command to run in a little bit ..."
-	echo "/etc/testbed/runstartup" | at -q S 'now + 2 minutes'
+	echo "/etc/testbed/runstartup" | at -q S 'now + 1 minute'
 fi