Migrate sdkext tests to CTS

Bug: 143937446
Test: treehugger
Change-Id: I583952fdfe8f169c6839a6488837bf4fb964d5a7
diff --git a/apex/sdkext/TEST_MAPPING b/apex/sdkext/TEST_MAPPING
index 8dc732d..91947f3 100644
--- a/apex/sdkext/TEST_MAPPING
+++ b/apex/sdkext/TEST_MAPPING
@@ -1,7 +1,7 @@
 {
   "presubmit": [
     {
-      "name": "framework-sdkext-tests"
+      "name": "CtsSdkExtTestCases"
     }
   ]
 }