Log Message:
lynis: update to 2.6.1

Changes:
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* Tests can have more than 1 required OS (e.g. Linux OR NetBSD)
* Added 'system-groups' option to profile (Enterprise users)
* Overhaul of default profile and migrate to new style (setting=value)
* Show warning if old profile options are used
* Improved detection of binaries
* New group 'usb' for tests related to USB devices

Tests:
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* [FILE-6363] - New test for /var/tmp (sticky bit)
* [MAIL-8802] - Added exim4 process name to improve detection of Exim
* [NETW-3030] - Changed name of dhcp client name process and added udhcpc
* [SSH-7408] - Restored UsePrivilegeSeparation
* [TIME-3170] - Added chrony configuration file for NetBSD