virtio_fs_migration_on_error: Migration test with migration-on-error #7104

Job	Run time
PR title	1s
Cfg lint	10s
Commit lint	16s
Python 3.6	1m 19s
Python 3.9	1m 30s
Cartesian syntax (qemu/tests/cfg/virtio_fs_migration_on_error.cfg)	7s
	3m 23s

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