Having Admin API, it is possible to do this properly now:
- create DisposableVM
- assign it proper permissions to create VMs and control those created
VMs
- run restore process inside
- cleanup DisposableVM afterwards
Since the RestoreInDisposableVM class contains de facto reverse parser
for qvm-backup-restore command line, add a test that will spot when it
gets out of sync.
This feature depends on modifications in various other components,
including:
- linux-utils and core-agent-linux for update qfile-unpacker
- core-admin for qrexec policy modification
QubesOS/qubes-issues#5310
