Keystore 2.0: Add legacy blob test to TEST_MAPPINGS

Test: keystore2_legacy_blob_test
Change-Id: Ifdd50bf2d837fc9120b0f847adca18bfde2be0ff
diff --git a/keystore2/TEST_MAPPING b/keystore2/TEST_MAPPING
index 049adc7..5d0a7dd 100644
--- a/keystore2/TEST_MAPPING
+++ b/keystore2/TEST_MAPPING
@@ -13,6 +13,9 @@
       "name": "keystore2_test_utils_test"
     },
     {
+      "name": "keystore2_legacy_blobs_test"
+    },
+    {
       "name": "CtsIdentityTestCases"
     },
     {