Improve audit_rules_privileged_commands

[jan-cerny]

The rule audit_rules_privileged_commands needs to be adjusted because it doesn't work in bootable containers.

• exclude /sysroot from searching for privileged commands
• include composefs as a valid type of filesystem partition
• apply remediations on the root filesystem during image build

[github-actions[bot]]

Start a new ephemeral environment with changes proposed in this pull request:

rhel8 (from CTF) Environment (using Fedora as testing environment)

Fedora Testing Environment

Oracle Linux 8 Environment