CORS-4350: zstd decompression for rhcos images

[patrickdillon]

RHCOS images may start using zstd compression. This prepares the installer to decompress that format.

[openshift-ci-robot]

@patrickdillon: This pull request references CORS-4350 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.22.0" version, but no target version was set.

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In response to this:

RHCOS images may start using zstd compression. This prepares the installer to decompress that format.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@patrickdillon: 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/e2e-aws-ovn	5eebb73	link	true	/test e2e-aws-ovn
ci/prow/okd-scos-images	5eebb73	link	true	/test okd-scos-images
ci/prow/artifacts-images	5eebb73	link	true	/test artifacts-images

Full PR test history. Your PR dashboard.

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