Add procmail to d-i.debian.org
It's used to sync d-i daily builds to casulana (via debian-cd).
Signed-off-by: 
Adam D. Barratt <adam@adam-barratt.org.uk>
It's used to sync d-i daily builds to casulana (via debian-cd).
Signed-off-by: Adam D. Barratt <adam@adam-barratt.org.uk>