Cleanup: use "ru" keymap for Russian, not "ruwin_alt-UTF-8" (bsc#1194…

…609)

ruwin_alt-UTF-8 was introduced in 2008 in response to
https://bugzilla.suse.com/show_bug.cgi?id=432862
because the previous keymap did not use Unicode.

"ru" does use Unicode, and it has a dual latin-cyrillic layout
(AltGr for single characters, Ctrl-Shift for layout switching)

In /usr/share/systemd/kbd-model-map the Russian keymap is a
kbd-model-map.legacy SUSE patch over upstream, and as Franck Bui was
reviewing this patch for upstreaming, we found that an entry for Russian
is still needed, but a default "ru" keymap has a better chance than a
specific one.

dropping_kbd_legacy.md

@@ -67,7 +67,7 @@ once, so removing kbd-legacy would break these languages als in X11.
 | Legacy keyboard map  | Selected replacement | Other options | Note           |
 | -------------------- | -------------------- | ------------- | ---------      |
 | gr                   | ?                    |               | Greek          |
-| ruwin_alt-UTF-8      | ?                    |               | Russian        |
+| ru                   | ?                    |               | Russian        |
 | tj_alt-UTF8          | ?                    |               | Tajik          |
 | ua-utf               | ?                    |               | Ukrainian      |
 

keyboard/src/lib/y2keyboard/keyboards.rb

@@ -226,7 +226,7 @@ def self.always_present_keyboards
       },
       { "description" => _("Russian"),
         "alias" => "russian",
-        "code" => "ruwin_alt-UTF-8", # not_in_xkb
+        "code" => "ru", # not_in_xkb
         "suggested_for_lang" => ["ru", "ru_RU.KOI8-R"]
       },
       { "description" => _("Serbian"),