add  postsubmit tests using test mapping

add HomeHelperTest and NotificationHelperTest to SystemUI folder as post
submit
add NotificationHelperTest to CarSystemUI folder as post submit
Test: cd to frameworks/base/packages/SystemUI, then run `atest
:auto-end-to-end-postsubmit
cd frameworks/base/packages/CarSystemUI, then run `atest
:auto-end-to-end-postsubmit
bug: 150406061

Change-Id: I8185135c3120a662b2ffe86fff4dacdcc8883a29
diff --git a/packages/SystemUI/TEST_MAPPING b/packages/SystemUI/TEST_MAPPING
index cff958f..cef4915 100644
--- a/packages/SystemUI/TEST_MAPPING
+++ b/packages/SystemUI/TEST_MAPPING
@@ -35,5 +35,18 @@
         }
       ]
     }
+  ],
+  "auto-end-to-end-postsubmit": [
+    {
+      "name": "AndroidAutoUiTests",
+      "options" : [
+        {
+          "include-filter": "android.test.functional.auto.apps.HomeHelperTest"
+        },
+        {
+          "include-filter": "android.test.functional.auto.apps.NotificationHelperTest"
+        }
+      ]
+    }
   ]
 }