Revert "Change arches"

This reverts commit 79429a4e1e.

prepopulate-i686.json

@@ -24936,7 +24936,7 @@
     }
   },
   "Extras": {
-    "i686": {
+    "i386": {
       "AMF": [
         "AMF-devel.noarch",
         "AMF-samples.noarch"

variants-i686.xml

@@ -254,7 +254,7 @@
   </variant>
   <variant id="Extras" name="Extras" type="variant">
     <arches>
-      <arch>i686</arch>
+      <arch>i386</arch>
     </arches>
     <groups>
       <group default="false">guest-agents</group>