Release v0.4.0 - Githubissues

Release

Release v0.4.0

[x] (Minor Release) Update metadata & clusterctl-settings.
[x] (Minor Release) Update version in e2e config.
[x] Update docs (compatibility table; usage etc).
[x] (Minor Release) Create release branch release-X.Y
[ ] (Patch Release) Cherry-pick all relevant changes into the release branch.
[x] Create tag vX.Y.Z.
[x] Update the draft release notes with generated release notes from sigs.k8s.io/cluster-api/hack/tools/release/notes
[x] Update the created draft release to include things like breaking changes or important notes.
[x] Check that the release contains the relevant artifacts.
[x] Publish the release.
[x] Test provider installation/upgrade with clusterctl