Renamed common role to a more obvious name based on function
Merge in my own prefered common packages. Split out some tools for future optional install. Remove mosh, prefer screen/screenie until mosh has proven security record.
Remove custom sources list in favour of ansibles own apt_repository module
Rename software-packages role to common-packages
Rename auth to the more specific user-setup
Rename doc file to match role rename
Add example user configuration from the ansibles
Fix list variable syntax, rename
Add an unattended upgrades role that auto installs security updates
Switch to more limited sshd_config changes.
Whitespace changes