Merge "Add CtsBlobStoreHostTestCases to test_mapping."

apex/blobstore/TEST_MAPPING

@@ -3,6 +3,9 @@
     {
       "name": "CtsBlobStoreTestCases"
     },
+    {
+      "name": "CtsBlobStoreHostTestCases"
+    },
     {
       "name": "FrameworksMockingServicesTests",
       "options": [
@@ -12,4 +15,4 @@
       ]
     }
   ]
-}
+}