For install on various virtual machines.

It needed for system sounds at least.

At least META_VOL_ID must be Simply*, otherwise  bootloader can't
find the install image.

xfce4-pulseaudio-plugin can show notifications too.

It don't work with current xorg.

For DHCPv6 should be used dhclient.

Smplayer don't depend on mplayer now: it can use mpv as well.

No ICAClient-preinstall in the Sisyphus.

- docker, vm, browser fixups (obirvalger@)
- elogind support, refactoring, cleanups (antohami@)
- a couple more improvements (me)

It's available for e2k too now.

This might evolve into some form of per-arch logic,
or otherwise x86 might get moved into a feature of
its own instead of being the presumed one.

The first step is done.

This reverts commit 226a2395.

Users are getting upset about NetworkManager being unable to
configure "System EthX" connections that are meant to set up
with "acc" (which isn't obvious at all).

See-also: https://forum.altlinux.org/index.php?topic=42519.0

firefox-classic_theme_restorer is not there anymore
(following pre-quantum fx29+ australis it countered):
http://git.altlinux.org/tasks/archive/done/_222/227910/logs/events.1.2.log

...it's no more in Sisyphus as of openstack-nova 18.1.0-alt1.

...since wmaker doesn't autostart anything.

elilo does not support secure boot with shim-signed 15.
jeos does not require Secure Boot.

With the arrival of elogind in sysvinit, the lxde metapackage can
be used for all builds.

With the arrival of elogind in sysvinit, the polkit agent is needed
within all builds using it.