1. Move all configs from /etc/NetworkManager/conf.d to
/usr/lib/NetworkManager/conf.d since the latter is more appropriate for
distribution-provided config files. In particular this means apk will
update them when the package file is changed rather than creating
`.apk-new` files. If a user wants to override such a file, they can create
a file with the same name under /etc/NetworkManager/conf.d
2. Move all dispatcher scripts from /etc/NetworkManager/dispatcher.d to
/usr/lib/NetworkManager/dispatcher.d for the same reason.
3. Rename all configs to have a "50-" prefix so that users can add their own
"99-" overrides with a guarantee that they'll be processed after
distribution-provided configs.
4. Rename dispatcher scripts to have a "50-" prefix instead of "85-" and "99-"
since they're distribution-provided files.
5. Move 50-tethering.conf from the base-ui package to
the base-ui-networkmanager package.
There are also some device packages that put config files without a numeric
prefix in /etc/NetworkManager/conf.d . This MR doesn't change those.
[ci:skip-build] already built successfully in CI
de08bca311