proposed patch for make-fai-nfsroot

[Thomas Neumann]

hiya

> Can we settle on this?
>
> # add any 3rd party repository keys that you may need installed into the
> NFSROOT
>
> for f in `find $cfdir/apt/keys-added-by-m-f-n -name *.asc`; do
> 	"cat $f | $ROOTCMD apt-key add -"
> done;

Suggestion: strip down "keys-added-by-m-f-n" to something shorter (like
previously mentioned "keys-added") and place a small textfile in there
explaining how and/or why these keys were added. (Maybe even which ones,
in case something else can / is going to put keyfiles there?)

It may be obvious to us, that "m-f-n" is make-fai-nfsroot, but it actually
isn't.

tschüß
thomas