CodeGen from PR 18350 in Azure/azure-rest-api-specs

Azure Red Hat OpenShift 2022-04-01 API (#18350)

* test

* Fix Swagger LintDiff failures

* More lint errors

* Update readme.md

* Update readme.python.md

Co-authored-by: Peter Kostyukov <pkostyuk@redhat.com>
Co-authored-by: Yuchao Yan <yuchaoyan@microsoft.com>

Author: 3 people