releng: Add intel-ucode to packages.both

Ucode updates correct problems with the processor. Without this (or a firmware update),
some machines fail to work in a stable manner. Make sure that the installation is smooth
by providing the ucode on the live system.

(While we're at it, sort packages.both alphabetically.)

configs/releng/packages.both

@@ -22,6 +22,7 @@ grml-zsh-config
 grub
 haveged
 hdparm
+intel-ucode
 ipw2100-fw
 ipw2200-fw
 irssi
@@ -40,8 +41,8 @@ openvpn
 partclone
 parted
 partimage
-pptpclient
 ppp
+pptpclient
 rfkill
 rp-pppoe
 rsync