config: sort out directory handling

[hippotat] / debian / hippotat.postinst

#!/bin/sh
set -e

adduser --system --group --force-badname --shell=/bin/bash \
	--home /etc/hippotat Debian-hippotat

umask 077

pd=/etc/hippotat/passwords.d
test -d $pd || \
install -m750 -o root -g Debian-hippotat $pd

#DEBHELPER#