Replace obsoleted xkb-plugin by xkb

xfce-settings/etcskel/.config/xfce4/panel/xkb-plugin-8.rc

-display_type=1
-display_textsize=0
-group_policy=2
-default_group=0
-never_modify_config=false
-model=evdev
-layouts=us,ru
-variants=,
-toggle_option=grp:ctrl_shift_toggle
-compose_key_position=compose:menu
-

xfce-settings/etcskel/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-panel.xml

@@ -16,8 +16,8 @@
         <value type="int" value="2"/>
         <value type="int" value="7"/>
         <value type="int" value="15"/>
+        <value type="int" value="4"/>
         <value type="int" value="11"/>
-        <value type="int" value="8"/>
         <value type="int" value="9"/>
         <value type="int" value="1"/>
       </property>
@@ -35,7 +35,6 @@
       <property name="flat-buttons" type="bool" value="true"/>
       <property name="switch-workspace-on-unminimize" type="bool" value="false"/>
     </property>
-    <property name="plugin-8" type="string" value="xkb-plugin"/>
     <property name="plugin-9" type="string" value="systray">
       <property name="names-visible" type="array">
         <value type="string" value="fusion-icon"/>
@@ -54,5 +53,10 @@
     </property>
     <property name="plugin-13" type="string" value="whiskermenu"/>
     <property name="plugin-1" type="string" value="datetime"/>
+    <property name="plugin-4" type="string" value="xkb">
+      <property name="display-type" type="uint" value="2"/>
+      <property name="display-name" type="uint" value="1"/>
+      <property name="group-policy" type="uint" value="0"/>
+    </property>
   </property>
 </channel>