[CPDEV-93723] Restore from backup holding another Kubernetes version

[ilia1243]

Description

• If backup.tar.gz for restore procedure holds different Kubernetes version, it is not reflected in final cluster.yaml.

Solution

• prepare.verify_backup_data task is now always done during enrichment, so Kubernetes version is always enriched.
• prepare.unpack task is now always done before enrichment.
• Recreate inventory with the version that is restored from backup.

Test Cases

TestCase 1

Backup and restore to the previous Kubernetes version. Check final inventory.

Steps:

1. Install kubernetes and make backup.
2. Upgrade to new version.
3. Restore using the backup archive.

ER: thirdparties are installed for old version. Old version is restored.

4. Check the resulting cluster.yaml.

Results:

Before	After
Still holds new Kubernetes version	Holds old Kubernetes version

TestCase 2

Restore only specific resources.

Steps:

1. Prepare backup and run restore --tasks import.nodes.

Results:

Before	After
KeyError: 'backup_tmpdir'	The task is run successfully.

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Integration CI passed
• Unit tests. If Yes list of new/changed tests with brief description
• There is no merge conflicts

Unit tests

test_restore.py - added tests to cover enrichment.