Fix 'warning: egrep is obsolescent; using grep -E'

Needed for bootloding with separate patition /boot.

iputils used to be added, as the iproute2 package depended on it.
iproute2> = 5.17.0-alt2 does not depend on the iputils more.

In order don't show /proc, /sys on Desktop.

- stage2: fix 50-stage2-fs
- desktop+mate: replace package list to metapackages

Fixed regression caused by a commit 7a2f65f9.

- lib/profile.mk: install branding-$$(BRANDING)-release always after basesystem
- stage2: use propagator for c% BRANCH also
- install2, live: don't add priority base packages for these stage
- regular-vm.mk: replace blueberry to blueman for desktop regulars
- tar2fs: avoid losetup race (thanks mike@ and glebfm)
- kernel: drop std-pae kernel flavour
- stage2: add more modules to 50-stage2-net
- output errors Step 3 to BUILDLOG and on screen
- pkg.in/lists/Makefile: sort lists before copying
- regular.mk: drop feature robotics
- education: add latest commits from cas@
- education: mark task-edu-* as metapackages
- slinux, workstation: add latest commits from sem@
- education, slinux, workstation: add fixes for e2k from mike@

There is no point in a feature that adds a two of package lists.

use/slinux/services-enabled and use/slinux/services-disabled do not
require for work adding slinux feature. They need a use/services.

In order to hide warning:
cp: warning: source file 'file' specified more than once

This will save time on identify the causes.

This should be used instead of installer-feature-online-repo.

See ALT bug #41869.

See ALT bug #41869.

For some firmware (e.g. firmware-alsa-sof).

For some firmware (e.g. firmware-alsa-sof).

The image is too large, so remove live from it.
Separate live image will be enough.

It is returned to Sisyphus/p10.

For newest hardware support.
This reverts commit 3f1b521acaf97293e875cafe47b6977db4947189.

It can be needed for some Russian websites.

It can be needed for some Russian websites.

It was added for use with NetworkManager, but NM uses its own
internal DHCP client nowaday.
This reverts commit e10fc4d3.

Suggested by mile@ for https.

For scaners:
Samsung ProXpress M3870FD
Pantum M7100DN
Oki MB472
Kyocera ECOSYS-M2040dn
Brother MFC L2720DW

For scaners:
Samsung ProXpress M3870FD
Pantum M7100DN
Oki MB472
Kyocera ECOSYS-M2040dn
Brother MFC L2720DW

Suggested by Vera Blagoveschenskaya.

Suggested by Vera Blagoveschenskaya.

Suggested by black@ for SL.
Well, why not to add for Workstation too?

See https://bugzilla.altlinux.org/40285,
https://bugzilla.altlinux.org/40029.