add variant us layout indicator needle

Somehow it seems this can look a bit different sometimes - see
https://openqa.fedoraproject.org/tests/22000 . The text seems
to be in a slightly different vertical position.

needles/anaconda/install_process/layout_us-variant.json

@@ -0,0 +1,15 @@
+{
+  "properties": [],
+  "tags": [
+    "anaconda_layout_us"
+  ],
+  "area": [
+    {
+      "xpos": 829,
+      "width": 35,
+      "type": "match",
+      "height": 15,
+      "ypos": 41
+    }
+  ]
+}