Define os_vendor logic doesn't work properly

[gmisura]

Have you checked ReadtheDocs?:
I checked and the search found nothing relevant.

Describe the Issue
The run_audit.sh defines the os_vendor variable by checking uname -a however, that fails when the OS is a container running on a EC2 (or gitlab runner on Amazon) since uname -a returns the kernel: 4.14.322-244.536.amzn2.x86_64
However the OS is Ubuntu per cat /etc/os-release

PRETTY_NAME="Ubuntu 22.04.5 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.5 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

Then the run_audit.sh script fails because it can't find the goss.xml because it is looking for AMAZON22-CIS-Audit/goss.xml:

WARNING - the /audit/AMAZON22-CIS-Audit/goss.yml is not available

Expected Behavior
I expect the run_audit.sh to properly identify the OS. Maybe using /etc/os-release is a better choice?

Actual Behavior
See above

Control(s) Affected
N/A

Environment (please complete the following information):

• branch being used: devel
• Ansible Version: [e.g. 2.10]
• Host Python Version: [e.g. Python 3.7.6]
• Ansible Server Python Version: [e.g. Python 3.7.6]
• Additional Details: N/A

Additional Notes
N/A

Possible Solution
The line in question that causes the error:

echo "WARNING - the $audit_content_dir/$AUDIT_FILE is not available"; export FAILURE=3

uses the var $audit_content_dir built:

audit_content_dir=$AUDIT_CONTENT_LOCATION/$audit_content_version

$audit_content_version comes from

audit_content_version=$os_vendor$os_maj_ver-$BENCHMARK-Audit

Could that simply be:

audit_content_version=$BENCHMARK_OS-$BENCHMARK-Audit

Instead?