It's all started with glebfm@ wondering why
kernel-modules-v4l-std-def ends up installed
with altlinux-p7-server-ovz.iso; this has been
tossed in by kernel-modules-staging-std-def
which has been requested by +wireless.

WiFi support is nice to have handy when one hits
a wifi-only device and no means to bring networking
up (the infamous "unzip.zip" situation) but it's
a bit too much to force a bunch of extra drivers
specifically known for sub-par or unknown quality
onto everyone installing an ALT Linux based server.

So let's contain that feature to desktop/rescue images
and exclude it from their common base with server ones.