Ignore CarSettings unit tests related to UserManager and dialog titles.

UserManager robolectric implementation is broken. Dialog titles appear
to be broken due to Chassification.

Bug: 148571547
Test: Robolectric tests pass
Change-Id: Ib54b30089e13b6b378ad267bbfa62d412693f64f
diff --git a/tests/robotests/src/com/android/car/settings/testutils/DialogTestUtils.java b/tests/robotests/src/com/android/car/settings/testutils/DialogTestUtils.java
index 303b607..022e15f 100644
--- a/tests/robotests/src/com/android/car/settings/testutils/DialogTestUtils.java
+++ b/tests/robotests/src/com/android/car/settings/testutils/DialogTestUtils.java
@@ -54,4 +54,10 @@
                 com.android.internal.R.id.alertTitle);
         return titleView.getText().toString();
     }
+
+    public static String getMessage(DialogFragment dialogFragment) {
+        TextView messageView = dialogFragment.getDialog().getWindow().findViewById(
+                com.android.internal.R.id.message);
+        return messageView.getText().toString();
+    }
 }