Adding CTS tests for the app widget APIs.

Change-Id: I2202996e8432d82b05c587c318a348a2d0c84331
diff --git a/CtsTestCaseList.mk b/CtsTestCaseList.mk
index d878d63..4fa5ba1 100644
--- a/CtsTestCaseList.mk
+++ b/CtsTestCaseList.mk
@@ -73,6 +73,7 @@
     CtsAdminTestCases \
     CtsAnimationTestCases \
     CtsAppTestCases \
+    CtsAppWidgetTestCases \
     CtsBluetoothTestCases \
     CtsCalendarcommon2TestCases \
     CtsContentTestCases \