Release v0.4.2

[ahg-g]

Release Checklist

• [x] All OWNERS must LGTM the release proposal
• [x] Verify that the changelog in this issue is up-to-date
• [x] For major or minor releases (v$MAJ.$MIN.0), create a new release branch.
  • [ ] an OWNER creates a vanilla release branch with git branch release-$MAJ.$MIN main
  • [ ] An OWNER pushes the new release branch with git push release-$MAJ.$MIN
• [x] Update things like README, deployment templates, docs, configuration, test/e2e flags. Submit a PR against the release branch:
• [ ] An OWNER prepares a draft release
  • [ ] Write the change log into the draft release.
  • [ ] Run make artifacts IMAGE_REGISTRY=registry.k8s.io/lws GIT_TAG=$VERSION to generate the artifacts and upload the files in the artifacts folder to the draft release.
• [ ] An OWNER creates a signed tag running git tag -s $VERSION and inserts the changelog into the tag description. To perform this step, you need a PGP key registered on github.
• [ ] An OWNER pushes the tag with git push $VERSION
  • Triggers prow to build and publish a staging container image gcr.io/k8s-staging-lws/lws:$VERSION
• [ ] Submit a PR against k8s.io, updating k8s.gcr.io/images/k8s-staging-lws/images.yaml to promote the container images to production:
• [ ] Wait for the PR to be merged and verify that the image registry.k8s.io/lws/lws:$VERSION is available.
• [ ] Publish the draft release prepared at the Github releases page.
• [ ] Add a link to the tagged release in this issue:
• [ ] Send an announcement email to sig-apps@kubernetes.io, sig-scheduling@kubernetes.io and wg-batch@kubernetes.io with the subject [ANNOUNCE] LeaderWorkerSet $VERSION is released
• [ ] Add a link to the release announcement in this issue:
• [ ] For a major or minor release, update README.md and docs/setup/install.md in main branch:
• [ ] For a major or minor release, create an unannotated devel tag in the main branch, on the first commit that gets merged after the release branch has been created (presumably the README update commit above), and, push the tag: DEVEL=v0.$(($MAJ+1)).0-devel; git tag $DEVEL main && git push $DEVEL This ensures that the devel builds on the main branch will have a meaningful version number.
• [ ] Close this issue

Changelog

[liurupeng]

/lgtm