Run intltest and cintltst as presubmit

- The test has been running with consistent result in the last few weeks
- The test is fast encough and takes 2 minutes only to complete.

Bug: 120776993
Test: intltest
Test: cintltst
Change-Id: I0b38049025891ef737cb10eb209edf241df597b5
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 56ebd37..befb8fc 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -1,5 +1,5 @@
 {
-  "postsubmit": [
+  "presubmit": [
     {
       "name": "intltest_test"
     },