Handle an auth dialog appearing after login on FAW

This will happen until a fedora-release PR is merged and sent
out for F28.

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

needles/gnome/desktop_auth_required-gnome.json

@@ -0,0 +1,16 @@
+{
+  "tags": [
+    "DESKTOP-gnome",
+    "desktop_auth_required"
+  ],
+  "area": [
+    {
+      "xpos": 593,
+      "ypos": 521,
+      "width": 86,
+      "height": 16,
+      "type": "match"
+    }
+  ],
+  "properties": []
+}

tests/_graphical_wait_login.pm

@@ -51,6 +51,17 @@ sub run {
         }
         send_key "ret";
 
+        # An auth request for update check appears on FAW 28 at this
+        # point, until
+        # https://pagure.io/fedora-release/pull-request/131 is merged
+        # and built
+        if (get_var("SUBVARIANT") eq 'AtomicWorkstation') {
+            if (check_screen "desktop_auth_required", 120) {
+                record_soft_failure "Update auth dialog on FAW - #1561853";
+                assert_and_click "desktop_auth_required";
+            }
+        }
+
         # Handle initial-setup, for GNOME, unless START_AFTER_TEST
         # is set in which case it will have been done already. Always
         # do it if ADVISORY is set, as for the update testing flow,