Comment 8 for bug 1704799

It is expected that the -22.ucode file is missing because it was deliberately removed per https://lists.ubuntu.com/archives/kernel-team/2017-July/085667.html

The -27.ucode file was added in linux-firmware 1.165 and updated in 1.168

None of the other versions were ever released by Intel according to the table at https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/core_release

Thus, there doesn't actually appear to be any outstanding problem tracked in this bug, so I'll set it to Fix Released.