Previously, all system charts have had their versions bumped with every
update of Cozystack, even if the underlying images and templates did not
change. Additionally, some components would have their docker images
rebuilt and get updated digests because of a changed docker context,
even though no relevant code had been changed. This would cause an
upgrade of several HelmReleases on every upgrade of Cozystack, even when
in practice nothing had changed. This is especially noticeable for
charts, such as kubeovn, which is a dependency for almost all other
system HelmReleases. By moving kubeovn out of the monorepo and
decoupling its release cycle from the release cycle of Cozystack, this
issue can be resolved and is another step towards decomposing Cozystack.
```release-note
[kubeovn] Decouple the release cycle of kubeovn from Cozystack's release
cycle, preventing unnecessary redeployments of all Helm releases, when
upgrading Cozystack.
```
Signed-off-by: Timofei Larkin <lllamnyp@gmail.com>
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