Merged !16

Make sys::modules compatible with Stretch

Default to automounter maps auto.bla instead autofs.bla

Cleanup old files in /etc/auto.master.d

sys::autofs refactored

sys_wallet resource refurbished

sys::nsswitch refurbished → incompatible change

Merged https://git.gsi.de/chef/cookbooks/sys/merge_requests/10

Merged https://git.gsi.de/chef/cookbooks/sys/merge_requests/4

New minor version for snmp and nfs changes

Small fixes

Implement handling of multiple recipients in sys_mail_alias

Rework chef recipe to be more sys-like, add logrotate rules

Add Ohai plugin to gather meltdown vulnerability info

Remove useless empty default attributes

Make filter for loghost forwarding custimizable