Add support for starting instances on creation #969

Job	Run time
Code	6m 33s
Documentation	6m 14s
Client (1.20.x, ubuntu-latest)	7m 33s
System (1.20.x, cluster, dir)	11m 5s
Client (1.20.x, macos-latest)	54s
System (1.20.x, cluster, btrfs)	12m 12s
Client (1.20.x, windows-latest)	2m 12s
System (1.20.x, cluster, lvm)	12m 5s
System (1.20.x, cluster, zfs)	13m 8s
System (1.20.x, cluster, ceph)	15m 16s
System (1.20.x, cluster, random)	13m 5s
System (1.20.x, standalone, dir)	22m 10s
System (1.20.x, standalone, btrfs)	21m 31s
System (1.20.x, standalone, lvm)	40m 26s
System (1.20.x, standalone, zfs)	42m 11s
System (1.20.x, standalone, ceph)	1h 13m 40s
System (1.20.x, standalone, random)	22m 39s
System (stable, cluster, dir)	10m 26s
System (stable, standalone, dir)	21m 7s
System (tip, cluster, dir)	11m 5s
System (tip, standalone, dir)	21m 40s
	6h 27m 12s

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