Docs for new rechunker features and a test for recursively setting user.component xattr

[ckyrouac]

Some docs and a test to validate the docs are correct. Also refactored the tests a bit to share code.

[gemini-code-assist]

Code Review

This pull request adds documentation for new rechunker features, specifically reusing layers and assigning files to layers via xattrs. It also adds a test for the recursive xattr assignment and refactors existing tests for better code sharing.

[openshift-ci]

@ckyrouac: 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/fcos-e2e	390a5b6	link	true	/test fcos-e2e

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[cgwalters]

Looks like this one needs a rebase?

[ckyrouac]

/override ci/prow/fcos-e2e

[openshift-ci]

@ckyrouac: ckyrouac unauthorized: /override is restricted to Repo administrators, approvers in top level OWNERS file, and the following github teams:.

Details

In response to this:

/override ci/prow/fcos-e2e

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.