add Calculator tests into continous run

Change-Id: Id9e46543e04102b237cae924bfe0f8da68bfe7fc
diff --git a/testrunner/test_defs.xml b/testrunner/test_defs.xml
index a7c65db..de0b272 100644
--- a/testrunner/test_defs.xml
+++ b/testrunner/test_defs.xml
@@ -408,7 +408,8 @@
 <test name="calculator"
     build_path="packages/apps/Calculator"
     package="com.android.calculator2.tests"
-    coverage_target="Calculator" />
+    coverage_target="Calculator"
+    continuous="true" />
 
 <test name="calendar"
     build_path="packages/apps/Calendar"