Unofficial Ubuntu 22.04 support e.a.

[Jeroen0494]

Overall Review of Changes:

• Add unofficial support for Ubuntu 22.04. While an official CIS for Ubuntu 22.04 hasn't been published yet, there are very little fundamental differences between 20.04 and 22.04.
• Change sysctl settings to be set in specific folders. Instead of dumping all the settings in the main file, use the sysctl.d subfolder and place the sysctl settings in their respective folders.
• The check for NetworkManager is applied to the wrong task, move it to the correct one.
• Fix some typo's

How has this been tested?:

• I've run this role against my own Ubuntu 22.04 installation, without rsyslog, without firewall and with systemd-timesyncd als NTP.