Bug#934707: Temporal fix-up

[Anonymous Legionus]

As temp workaround, inspect policy files in /etc/dbus-1/system.d and create
missed users. One liner:
for i in $(awk 'BEGIN{FS="user=\"|\">"}; $0 ~ /policy user=/{print $2}'
/etc/dbus-1/system./* | sort -u); do [ "x$(getent passwd $i)" = "x" ] && {
useradd -Mr $i && echo System user $i created; }; done