Prepare for better device categorization by moving everything to testing
subdir first.
[skip-ci]: chicken-egg problem: passing pmaports CI depends on pmbootstrap MR
depends on this MR
Related: postmarketos#16
Placing such files in /tmp/ is an unnecessary attack vector, as
@pavelmachek showed. All udev rules, which mentioned /tmp/weston.log
do not contain any path anymore.
Logs can be read with:
logread -f /var/log/messages | grep weston
See also: <https://wiki.alpinelinux.org/wiki/Syslog>