Create a test mapping item for hubui tests.

Bug: 203548108
Change-Id: I0b30c32a2e77e2a117365b282ac7b1ea22fdbeb4
diff --git a/packages/SystemUI/TEST_MAPPING b/packages/SystemUI/TEST_MAPPING
index 45e0345..3b85617 100644
--- a/packages/SystemUI/TEST_MAPPING
+++ b/packages/SystemUI/TEST_MAPPING
@@ -154,5 +154,24 @@
           }
         ]
       }
+  ],
+  "hubui-postsubmit": [
+      {
+        "name": "PlatformScenarioTests",
+        "options": [
+          {
+              "include-filter": "android.platform.test.scenario.hubui"
+          },
+          {
+              "include-annotation": "android.platform.test.scenario.annotation.HubUi"
+          },
+          {
+              "exclude-annotation": "org.junit.Ignore"
+          },
+          {
+              "exclude-annotation": "androidx.test.filters.FlakyTest"
+          }
+      ]
+    }
   ]
 }