CMP-4446: Add manual rule kubevirt-disable-intel-txt (CIS OCP-Virt 5.1)

[taimurhafeez]

Add a manual rule for CIS OCP-Virt control 5.1 "Disable Intel Trusted Execution Technology (TXT)". The rule documents the host firmware audit procedure (fwupdmgr get-bios-settings) and is added to the cis-vm-extension CEL profile. Also relax build_cel_content.py to warn instead of error when a CEL profile references rules without CEL checks, allowing manual rules in CEL profiles. Update CEL documentation accordingly.

Co-Authored-By: Claude

[openshift-ci]

Hi @taimurhafeez. Thanks for your PR.

I'm waiting for a ComplianceAsCode member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work.

Tip

We noticed you've done this a few times! Consider joining the org to skip this step and gain /lgtm and other bot rights. We recommend asking approvers on your previous PRs to sponsor you.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[Vincent056]

LGTM — correct direction (benchmark wants TXT disabled) and fwupdmgr matches the suggested audit. Two asks: (1) rebase to drop the duplicated build-script/docs change once #14920 merges; (2) note in the description that firmware tooling varies by vendor and BIOS access may be required.

[rhmdnd]

Looks like a legitimate use case for Manual unless we can access fwupdmgr as a node check (I'm not seeing any other rules that do this today)?

Otherwise we'll just need a rebase.

[Vincent056]

/lgtm
/approve

[Vincent056]

/ok-to-test

[openshift-ci]

@taimurhafeez: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws-openshift-node-compliance	c70dec1	link	false	/test e2e-aws-openshift-node-compliance

Full PR test history. Your PR dashboard.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.