fix(backups): fix CR not deleting older VM

[fbeauchamp]

Description

scheduleId was not passed to the writers constructor. It leads to missing scheduleId in metadata (I think there is no consequence), and a bad filter to detect VM to delete after a successfull replication

Users may need to delete manually the VM created that way

Checklist

• Commit
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  • Reference the relevant issue (Fixes #007, See xoa-support#42, See https://...)
  • If bug fix, add Introduced by
• Changelog
  • If visible by XOA users, add changelog entry
  • Update "Packages to release" in CHANGELOG.unreleased.md
• PR
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