WIP Add automated tests for kubelet LimitedSwap drop-in configuration for CNV

[BhargaviGudi]

This PR adds automated tests for the LimitedSwap feature using the /etc/openshift/kubelet.conf.d/ drop-in directory on CNV-enabled clusters.

Test Cases:
TC1: Verify drop-in directory exists on worker nodes (not on control plane)
TC2: Verify kubelet starts normally with empty directory
TC3: Verify LimitedSwap configuration applies from drop-in file
TC4: Verify revert to NoSwap when drop-in file is removed
TC5: Verify drop-in files have no effect on control plane nodes
TC6-TC14: Additional tests for file precedence, malformed configs, metrics, etc.

Changes:
test/extended/node/node_swap_cnv.go - New test file with CNV swap tests
test/extended/node/node_utils.go - Helper functions for node operations and CNV lifecycle
test/extended/testdata/node/cnv-swap/ - Test data YAML files

[openshift-ci-robot]

Pipeline controller notification
This repo is configured to use the pipeline controller. Second-stage tests will be triggered either automatically or after lgtm label is added, depending on the repository configuration. The pipeline controller will automatically detect which contexts are required and will utilize /test Prow commands to trigger the second stage.

For optional jobs, comment /test ? to see a list of all defined jobs. To trigger manually all jobs from second stage use /pipeline required command.

This repository is configured in: automatic mode

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: BhargaviGudi
Once this PR has been reviewed and has the lgtm label, please assign stbenjam for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[openshift-ci]

@BhargaviGudi: The following tests 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/verify	c72c3f5	link	true	/test verify
ci/prow/verify-deps	c72c3f5	link	true	/test verify-deps
ci/prow/go-verify-deps	c72c3f5	link	true	/test go-verify-deps

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.