keystore2: Also run CtsIdentityTestCases on presubmit.

This is needed because credstore depends on getting auth-tokens from
keystore2.

Bug: None
Test: N/A
Change-Id: I87e130f1e9a39bb48c73a9702b26d84b3a5c5707
diff --git a/keystore2/TEST_MAPPING b/keystore2/TEST_MAPPING
index 99a1e60..16b6f85 100644
--- a/keystore2/TEST_MAPPING
+++ b/keystore2/TEST_MAPPING
@@ -8,6 +8,9 @@
     },
     {
       "name": "keystore2_test"
+    },
+    {
+      "name": "CtsIdentityTestCases"
     }
   ]
 }