openbox autostart calls the autostart script with sh as shell and
using ansible's debconf module does not change dash to bash
successfully, so for the moment we need to use the shell command instead.
This reverts commit 4170935a5a.
- use generic media_dirs including vdr recdir, loop over them to
create directories, configure samba, nfs, etc.
- add role to install an configure nfs-kernel-server
- cleanup roles
- add custom fact modules
