Fix volatile key definitions #1243

Job	Run time
Documentation	6m 36s
Client (1.21.x, ubuntu-latest)	1m 5s
Client (1.21.x, macos-latest)	1m 3s
Code	6m 57s
Client (1.21.x, windows-latest)	2m 31s
System (1.21.x, cluster, dir)	12m 26s
System (1.21.x, cluster, btrfs)	12m 18s
System (1.21.x, cluster, lvm)	12m 35s
System (1.21.x, cluster, zfs)	12m 31s
System (1.21.x, cluster, ceph)	15m 50s
System (1.21.x, cluster, random)	12m 41s
System (1.21.x, standalone, dir)	21m 43s
System (1.21.x, standalone, btrfs)	21m 29s
System (1.21.x, standalone, lvm)	38m 30s
System (1.21.x, standalone, zfs)	41m 26s
System (1.21.x, standalone, ceph)	1h 13m 53s
System (1.21.x, standalone, random)	30m 23s
System (stable, cluster, dir)	10m 51s
System (stable, standalone, dir)	22m 4s
System (tip, cluster, dir)	11m 25s
System (tip, standalone, dir)	21m 18s
	6h 29m 35s

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