cronet: Copy configuration for CTS from //cts/tests/test

This allows us to separate the mainline's module's test from
the rest of CTS

Test: atest CtsCronetTestCases
Bug: 251012627
Change-Id: I3a2f2ae93c05c59b00ce877e2d8572233ae64e14
diff --git a/Cronet/TEST_MAPPING b/Cronet/TEST_MAPPING
index 815d496..b1f3088 100644
--- a/Cronet/TEST_MAPPING
+++ b/Cronet/TEST_MAPPING
@@ -1,7 +1,7 @@
 {
-  "postsubmit": [
+  "presubmit": [
     {
-      "name": "CronetApiTest"
+      "name": "CtsCronetTestCases"
     }
   ]
 }