Add TEST_MAPPING

Add TEST_MAPPING to run CtsDatabaseTestCases.

Test: treehugger
Change-Id: I87c6ef8edd5533e2704702678f017b24250fedb8
diff --git a/TEST_MAPPING b/TEST_MAPPING
new file mode 100644
index 0000000..4a7fa66
--- /dev/null
+++ b/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit": [
+    {
+      "name": "CtsDatabaseTestCases"
+    }
+  ]
+}