Add CtsBionicAppTestCases to TEST_MAPPING.

I can't believe we haven't been running this in presubmit.

I still can't explain how http://b/326189243 wasn't caught in presubmit,
but this can't hurt...

Test: treehugger
Change-Id: Ib74df38da8909bd20f9cb0cbaddff5119afb8d83
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 9304013..521590d 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -10,6 +10,9 @@
       "name": "linker-unit-tests"
     },
     {
+      "name": "CtsBionicAppTestCases"
+    },
+    {
       "name": "CtsBionicTestCases"
     },
     {
@@ -54,6 +57,9 @@
       "name": "linker-unit-tests"
     },
     {
+      "name": "CtsBionicAppTestCases"
+    },
+    {
       "name": "CtsBionicTestCases"
     },
     {