Add new variant us_rtl layout needle

For RTL languages the keyboard icon and language indicator are
the other way around, so we have different needles even for the
US layout indicator which is otherwise the same in all langs.
This is a variant needle for the new keyboard icon that showed
up in Rawhide recently.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/anaconda/install_process/arabic/layout_us_rtl-20190913.json

@@ -0,0 +1,17 @@
+{
+  "area": [
+    {
+      "height": 17,
+      "type": "match",
+      "width": 37,
+      "xpos": 643,
+      "ypos": 371
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "LANGUAGE-arabic",
+    "anaconda_layout_ascii",
+    "anaconda_layout_us"
+  ]
+}