Include AppExistHostTest in com.android.server.am TEST_MAPPING

These tests check oom score and should be run to catch OomAdjuster
behavior changes.

Test: n/a
Bug: 318437127
Change-Id: Ib1a9e653f1bbad4d2d3e3dc5b9001e45b0ceaa45
diff --git a/services/core/java/com/android/server/am/TEST_MAPPING b/services/core/java/com/android/server/am/TEST_MAPPING
index 575db01..e90910a 100644
--- a/services/core/java/com/android/server/am/TEST_MAPPING
+++ b/services/core/java/com/android/server/am/TEST_MAPPING
@@ -146,6 +146,15 @@
         { "include-filter": "android.app.cts.ServiceTest" },
         { "include-filter": "android.app.cts.ActivityManagerFgsBgStartTest" }
       ]
+    },
+    {
+      "name": "CtsStatsdAtomHostTestCases",
+      "options": [
+        { "include-filter": "android.cts.statsdatom.appexit.AppExitHostTest" },
+        { "exclude-annotation": "androidx.test.filters.LargeTest" },
+        { "exclude-annotation": "androidx.test.filters.FlakyTest" },
+        { "exclude-annotation": "org.junit.Ignore" }
+      ]
     }
   ]
 }