Add CarrierAppUtils integration test to telephony presubmit.

Test has been stable for a few days in postsubmit:
https://blackbox.googleplex.com/testsuite?branch=git_master&target=cf_x86_phone-userdebug&testsuite=TestMapping-vendor%2Fgoogle_testing%2Fintegration%2Ftests%2Fcarrierapp&type=functional

Bug: 150399810
Test: N/A
Change-Id: I8e8c99321ef21fe42a89029a350cde79c57fc689
diff --git a/TEST_MAPPING b/TEST_MAPPING
index e75dcb0..75b9d49 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -7,6 +7,9 @@
           "exclude-annotation": "androidx.test.filters.FlakyTest"
         }
       ]
+    },
+    {
+      "name": "CarrierAppIntegrationTestCases"
     }
   ]
 }