Add CtsBlobStoreHostTestCases to test_mapping.

Test: atest --test-mapping apex/blobstore
Change-Id: I5f854de9cef8f597fac1a5fa033a5561555f6173
diff --git a/apex/blobstore/TEST_MAPPING b/apex/blobstore/TEST_MAPPING
index 25a1537..6d3c0d7 100644
--- a/apex/blobstore/TEST_MAPPING
+++ b/apex/blobstore/TEST_MAPPING
@@ -4,6 +4,9 @@
       "name": "CtsBlobStoreTestCases"
     },
     {
+      "name": "CtsBlobStoreHostTestCases"
+    },
+    {
       "name": "FrameworksMockingServicesTests",
       "options": [
         {
@@ -12,4 +15,4 @@
       ]
     }
   ]
-}
\ No newline at end of file
+}