force to boot from pxe before the reboot in the genesis

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.8@16473 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-genesis-scripts/bin/doxcat

@@ -159,8 +159,10 @@ while :; do
 		cd -
 	elif [ "$dest" = "reboot" -o "$dest" = "boot" ]; then
 		/bin/nextdestiny $XCATMASTER:$XCATPORT
+		ipmitool chassis bootdev pxe
 		reboot -f
 	elif [ "$dest" = "install" -o "$dest" = "netboot" ]; then
+		ipmitool chassis bootdev pxe
 		reboot -f
 	elif [ "$dest" = sysclone ]; then
                 /bin/dosysclone