Comment 0 for bug 2015596

In Ubuntu 22.04, the HWE kernel has rolled to 5.19. the 5.19 kernel includes the apparmor feature for ipc/posix_mqueue. livecd-rootfs only contains features for the 5.15 kernel, thus missing ipc/posix_mqueue. This leads to snap_preseed having a mismatch in features, and the preseed is not optimized. in a cloud environment this can lead to boot delays of between 5 and 10s (rough measurements observed while debugging)

livecd-rootfs bind mounts apparmor features in functions/setup_mountpoint. This occurs early in the process when the final kernel is unknown.