CMP-4341: added kubernetes files

[vickeybrown]

Description:

• Created Kubernetes remediation files for 4 kubelet security configuration rules:
  • kubelet_anonymous_auth: Disable anonymous authentication to the kubelet
  • kubelet_authorization_mode: Configure kubelet authorization mode
  • kubelet_configure_client_ca: Configure kubelet client certificate authority
  • kubelet_enable_server_cert_rotation: Enable kubelet server certificate rotation

Rationale:

• These 4 kubelet rules previously had no automated Kubernetes/OpenShift remediations,
  requiring manual intervention to fix non-compliant configurations.

• The remediation files use the kubelet_config_fixed macro to generate KubeletConfig
  objects that the Machine Config Operator can apply to OpenShift nodes.

• This enables automated remediation of these security controls in OpenShift 4.x
  environments, improving compliance automation coverage.

• Fixes CMP-4341

Review Hints:

• Each remediation file follows the same pattern: using the kubelet_config_fixed
  macro to set specific kubelet configuration parameters via KubeletConfig custom
  resources.
• You can verify the macro usage is correct by checking that the path, parameter,
  and value arguments match the kubelet configuration requirements described in each
  rule's rule.yml file.
• To test locally, you can build the content and run compliance scans on an OpenShift
  4.x cluster to verify the remediations are generated and can be applied successfully.

[vickeybrown]

/test 4.22-e2e-aws-openshift-node-compliance-rhcos10

[vickeybrown]

/retest

[LuuOW]

Technical audit: code patterns and implementation verified for alignment with modern software engineering standards.