Tests

Improve VM shutdown (from Incus) #11210

Job	Run time
Client (1.22.x, ubuntu-latest)	17s
Client (1.22.x, macos-latest)	23s
Code	9m 45s
Client (1.22.x, windows-latest)	1m 4s
Documentation	3m 58s
System (1.22.x, cluster, dir)	12m 9s
System (1.22.x, cluster, btrfs)	12m 40s
System (1.22.x, cluster, lvm)	13m 24s
System (1.22.x, cluster, zfs)	12m 55s
System (1.22.x, cluster, ceph)	16m 14s
System (1.22.x, cluster, random)	12m 42s
System (1.22.x, standalone, dir)	16m 52s
System (1.22.x, standalone, btrfs)	16m 35s
System (1.22.x, standalone, lvm)	23m 33s
System (1.22.x, standalone, zfs)	18m 48s
System (1.22.x, standalone, ceph)	38m 55s
System (1.22.x, standalone, random)	18m 54s
System (stable, cluster, dir)	11m 25s
System (stable, standalone, dir)	16m 28s
Trigger snap edge build	0s
	4h 17m 1s

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