VT not showing cyrillic characters in text mode

[lexa guskov]

Hello everyone. 

Cannot figure out if vt console driver supports non-ansi characters when started in textmode. The font in sys/dev/vt/vt_font_default.c seem to include cyrillic glyphs, but either it is not being used in textmode or something else is broken since only '?' are displayed instead of proper symbols. The LANG/LC_ALL doesnt affect anything. The problem occurs on 11.0-RELEASE and 10.3-RELEASE.
Textmode is required since vt performance in graphical mode is very poor on HyperV and textmode seems to be the only option.

-- 
Alexey Guskov