lxd/image: Acquire image lock for uploaded images #11633

Job	Run time
Client (1.22.x, ubuntu-latest)	21s
Code	11m 8s
Client (1.22.x, macos-latest)	24s
Documentation	4m 6s
Client (1.22.x, windows-latest)	2m 13s
System (1.22.x, cluster, dir)	11m 8s
System (1.22.x, cluster, btrfs)	18m 1s
System (1.22.x, cluster, lvm)	11m 42s
System (1.22.x, cluster, zfs)	11m 15s
System (1.22.x, cluster, ceph)	14m 37s
System (1.22.x, cluster, random)	10m 46s
System (1.22.x, standalone, dir)	27m 38s
System (1.22.x, standalone, btrfs)	24m 41s
System (1.22.x, standalone, lvm)	44m 2s
System (1.22.x, standalone, zfs)	42m 59s
System (1.22.x, standalone, ceph)	1h 20m 43s
System (1.22.x, standalone, random)	33m 48s
System (stable, cluster, dir)	12m 26s
System (stable, standalone, dir)	25m 27s
Tiobe TICS	0s
Trigger snap edge build	0s
	6h 27m 25s

Provide feedback