Run extra tests on scudo changes.

Even though scudo is not enabled right now, when it is, we want to make
sure that memunreachable_unit_test and bionic unit tests are run on
any change.

Bug: 137795072

Test: Ran atest.
Change-Id: I4e3fcc65d30865396efe92bc6d98aa903b7a5c23
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 287b24e..a8f41fb 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -2,6 +2,12 @@
   "presubmit": [
     {
       "name": "scudo_unit_tests"
+    },
+    {
+      "name": "memunreachable_unit_test"
+    },
+    {
+      "name": "CtsBionicTestCases"
     }
   ]
 }