Add another new SDDM login needle

I cannot see how this varies from the other one, but os-autoinst
thinks they're different...

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

needles/kde/login_sddm_input-alt-20190527.json

@@ -0,0 +1,19 @@
+{
+  "area": [
+    {
+      "height": 17,
+      "ypos": 446,
+      "type": "match",
+      "xpos": 390,
+      "width": 80
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "DESKTOP-kde",
+    "LANGUAGE-english",
+    "graphical_login",
+    "graphical_login_input",
+    "login_screen"
+  ]
+}