incusd/loki: Sort lifecycle context keys #394

Job	Run time
Code	7m 6s
Documentation	6m 42s
Client (1.20.x, ubuntu-latest)	22s
System (1.20.x, cluster, dir)	11m 21s
Client (1.20.x, macos-latest)	31s
System (1.20.x, cluster, btrfs)	12m 42s
Client (1.20.x, windows-latest)	1m 9s
System (1.20.x, cluster, lvm)	12m 17s
System (1.20.x, cluster, zfs)	13m 42s
System (1.20.x, cluster, ceph)	15m 42s
System (1.20.x, cluster, random)	12m 37s
System (1.20.x, standalone, dir)	22m 5s
System (1.20.x, standalone, btrfs)	22m 55s
System (1.20.x, standalone, lvm)	39m 24s
System (1.20.x, standalone, zfs)	43m 10s
System (1.20.x, standalone, ceph)	1h 13m 58s
System (1.20.x, standalone, random)	23m 3s
System (stable, cluster, dir)	11m 23s
System (stable, standalone, dir)	22m 4s
System (tip, cluster, dir)	12m 45s
System (tip, standalone, dir)	21m 32s
	6h 26m 30s

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