Setup error insert to interleave DEFINE_BACKUP_REQ replies with NODE_FAILREP

Start backup, that will fail due to node failure
Wait for cluster to come up again
Setup error insert to interleave START_BACKUP_REQ replies with NODE_FAILREP

Start backup, that will fail due to node failure
Wait for cluster to come up again
Setup error insert to interleave STOP_BACKUP_REQ replies with NODE_FAILREP

Start backup, that will fail due to node failure
Wait for cluster to come up again
Setup error insert so that backup fails in a controlled way

Start backup, that will fail due to node failure
Check that node failure was controlled (e.g. node recovers)
Node recovered, ok
Clear error

Check backup ok