main/kmod: support merged /usr

This changes the APKBUILD trigger to also monitor /usr/lib/modules, and fixes the trigger to grep the kernel version for depmod from a usr-merged path.

Related: tsc#73 (closed)

assigned to @ncopa

apparently apk doesn't care if trigger paths exist or not, so this change has no impact on Alpine installs that don't have merged /usr implemented (trigger should continue to work)

We'll likely need something similar in some weeks too, so sounds good to me to move the /usr merge in alpine too

mentioned in issue tsc#73 (closed)

added 412 commits

• 736017d7...1cf1baa4 - 411 commits from branch alpine:master
• d13e0c4b - main/kmod: support merged /usr

Compare with previous version

merged

mentioned in merge request !71711 (closed)

mentioned in merge request !72041 (merged)

changed milestone to %project: Implement /usr merge