- Make more use of %{_unitdir} in files.{systemd,container}

- Installation of libnss_mymachines.so depended on %{bootstrap} but it is
actually installed when %{with machined} is true.
- Call ldconfig when container subpackage is installed since it ships
nss-mymachines NSS plug-in module.

- Import commit 117bd7f14aa7834d85a4306cd380d292bec04108
1395c74be7 udevadm: cleanup-db: don't delete information for kept db entries (bsc#1194912)
bbafc8092a udevadm: cleanup_dir: use dot_or_dot_dot()

- Drop 0006-sysv-generator-add-back-support-for-SysV-scripts-for.patch
0009-sysv-add-back-support-for-all-virtual-facility-and-f.patch
Given the fact that Factory no more ship SysV init scripts since several
months, only scripts coming from 3rd party applications should remain which
are unlikely to rely on the SUSE specifities implemented by these
patches. This change was announced on the Factory mailing list:
https://lists.opensuse.org/archives/list/factory@lists.opensuse.org/thread/3ERUP5ZZJ6PPA36L3HVN46BH6U6JL74O/

- Import commit 885e0b9126bd2cf1e3f6b147c45ec58a5550c75c
41334be59e meson: minor cleanup
3db0c28462 sysusers: split up systemd.conf
- Drop 0012-resolved-create-etc-resolv.conf-symlink-at-runtime.patch (bsc#1195153)
Since v241, the patch isn't useful anymore because resolved is no more able to
create /etc/resolv.conf symlink by itself,it runs as 'systemd-resolve'
user. The symlink is now handled by a tmpfiles config file which is only
installed when systemd-resolved is. The tmpfiles config file has currently a
lower priority than the one shipped by netconfig.

- Make use of %ldconfig_scriptlets