Update openebs stack to 4.0.1

[alexeigutium]

BACKGROUND

• Add information about the background and reason for the change.

Openebs was migrated to the new chart repo, so it became not functional in DO. This PR fixes the OpenEBS k8s app

Changes

Updated OpenEBS to version

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Checklist

• review the contributing doc with steps for both adding or updating your application (if applicable)

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Reviewer: @marketplace-eng

[v-aisac]

Looks good!

[github-actions]

👋 @alexeigutium
If this is an EXISTING Marketplace app, now that the PR is merged, all new users of your app will get the current version. You should visit the Vendor Portal to make sure you update any version numbers, Description, or Getting Started information that are related to the merged PR.
If this is a BRAND NEW Marketplace app, before this app update can go live on the Marketplace, please update and submit your app from the Vendor Portal.
Thanks!