prepare release

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
releng: Fix 81-dhcpcd.rules

Commit a526d961f84fbd1a7c3b8c0d9c045700153626b7 broke this rule for virtio and other
devices where no ID_NET_* is exported.
prepare release
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] Update the way to set default multi-user.target

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
[configs/releng] Fix script= expansion

Fix FS#40049

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
Updated to v15