Now that firefox is available in sisyphus_riscv64,
let's use it as our default browser.

Note that firefox-esr is not yet available, so now on
riscv64 firefox is selected for use/browser/firefox-esr.

- alt-workstation-cloud: Use NetworkManager (from obirvalger@)
- install2: Don't cleanup /lib/modules/*/kernel/arch (from jqt4@)
- alt-server: add commits from jqt4@
- kworkstation: add commitd from zerg@
- grub: drop kazakh language support
- efi: add workaround for p10 branch to fix booting from a flash drive
- grub: do not copy locale, if not used gfxterm

Some of the native libraries used by jitsi-meet
(eg libjnisctp.so libjitsisrtp.so) are only compiled
for the x86_64 architecture.
As a consequence, jitsi-meet cannot run properly
on architectures other than x86_64.

See-also: https://bugzilla.altlinux.org/44327
See-also: https://bugzilla.altlinux.org/44494
See-also: https://bugzilla.altlinux.org/44496

It is needed for qemu-device-display-virtio-vga on aarch64

No need to hope that will add package grub-common to stage1 only
together with branding. With terminal_output=console, non-ASCII
characters are not displayed.

Kazakh language is not supported in alterator-sysconfig.

The vbox-guest and vbox-host lists contain x86-only packages.
An alt-server image is not planned for i586.
The groups "VirtualBox Guest Additions" and "VirtualBox for host
system" will only be created in the image for x86_64, since for
other architectures they will remain empty, which is undesirable.

To create a BtrFS partition in the installer

Firefox does not work well on aarch64 architecture:
- slow video playback https://bugzilla.altlinux.org/43839
- does not allow microphone to be used on video conferencing sites