Comment # 2 on bug 933664 from Marcus Schaefer

well /var/lib/named seems not to belong to any package. Thus this directory is
not created while the packages are installed. You need to create that one
yourself in config.sh or open a bug against named if it is one

    mkdir -p var/lib/named

in config.sh solves this one. Maybe you also need to do this for mailman and
pgsql

Another part I see is that you have added 

    <volume name="boot/grub2/i386-pc"/>
    <volume name="boot/grub2/x86_64-efi"/>

This requires to switch off the use of an extra boot partition which is still
the default in kiwi for volume based systems. I suggest you add

    bootpartition="false"

to your <type> definition

While testing I have found a bug in the grub2 boot path setup if btrfs is used
because the volumes are all nested in a master '@' volume which is needed in
the path of the grub.cfg to let grub2 find files in this filesystem


I have fixed this part and will submit a new kiwi today