Switch to import for CtsUiRenderingTestCases

Centralizes option management

Test: this
Change-Id: Ib66f185b8f1506e21f2189618f1f16311a064d0a
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 4fdb49b..e881d5d 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -1,7 +1,7 @@
 {
-  "presubmit": [
+  "imports": [
     {
-      "name": "CtsUiRenderingTestCases"
+      "path": "cts/tests/tests/uirendering"
     }
   ]
 }
\ No newline at end of file