Disable restart controller

[maltesander]

Description

fixes #750

• Disables restart controller
• Emit warning in format-namenodes container if data is corrupted during formatting
• Add troubleshooting guide

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

Author

• Changes are OpenShift compatible
• CRD changes approved
• CRD documentation for all fields, following the style guide.
• Helm chart can be installed and deployed operator works
• Integration tests passed (for non trivial changes)
• Changes need to be "offline" compatible
• Links to generated (nightly) docs added
• Release note snippet added

Reviewer

• Code contains useful comments
• Code contains useful logging statements
• (Integration-)Test cases added
• Documentation added or updated. Follows the style guide.
• Changelog updated
• Cargo.toml only contains references to git tags (not specific commits or branches)

Acceptance

• Feature Tracker has been updated
• Proper release label has been added
• Links to generated (nightly) docs added
• Release note snippet added
• Add type/deprecation label & add to the deprecation schedule
• Add type/experimental label & add to the experimental features tracker

[sbernauer]

We could leave this code in (commented).
At the very least IMHO we should add a TODO pointing to the issue

[maltesander]

I thought about it, but its not much change/revert. I removed the enable part from changelog as well. I think we should rather untick HDFS in the restarter epic?

[sbernauer]

That sounds like a good idea